The act of taking something from the world and reducing it to its essential geometry, color, or feeling. What remains after you’ve removed everything that was merely factual. → Visual Culture Guide

A Mediterranean plant whose deeply lobed leaves have appeared in architecture for over 2,000 years, carved atop Corinthian columns, scrolling through stone moldings, recurring long after the plants themselves have wilted. A motif so durable it outlasted empires. → Architecture

The way light mixes: red, green, and blue combining at full intensity to produce white. The logic of screens and projectors, as opposed to paint and ink. → Design

The visual phenomenon, and the painter’s technique, of showing depth through haze. Things farther away appear cooler, lighter, and less defined. Mountains blue with distance. The horizon softening into sky. → Painting

The branch of philosophy concerned with beauty, taste, and the experience of art. Also, informally: the visual language of any person, place, or era. → Visual Culture Guide

Art made as a weapon. Political messaging designed to provoke, destabilize, or mobilize. Born in Soviet Russia, alive wherever images are deployed as arguments. → History

A process that works by continuous variation, the rising and falling of voltage, the exposure of silver on film, rather than discrete steps. Warm, tactile, imprecise. The opposite of digital. → Photography

The opening in a camera lens through which light passes. Wider apertures gather more light and blur backgrounds. Narrower apertures keep more of the image sharp. The first variable a photographer learns to control. → Photography

An original form, so fundamental, so repeated, that it becomes a template. The hero. The threshold. The circle. Archetypes appear across cultures because they map something true about human experience. → Visual Culture Guide

Raw art made outside the mainstream, by those with no formal training, by prisoners, by people in psychiatric institutions. The term was coined by Jean Dubuffet, who believed that art untouched by culture was the most honest art of all. → Art

A late 19th-century style that borrowed from natural forms, sinuous stems, insect wings, female hair, and bent them into decoration. Mucha’s posters. Gaudí’s buildings. The Paris Métro entrances. → Design

A sculptural technique in which three-dimensional objects are combined, often found objects, fragments, cast-off materials. Joseph Cornell’s boxes. The work of Louise Nevelson. Art made from accumulation. → Sculpture

A composition in which the two halves don’t mirror each other, but still feel balanced. The more sophisticated arrangement, harder to achieve than symmetry, and usually more alive. → Design

See Aerial Perspective. The technique of depicting depth through softness and cool hues in the distance. → Painting

The advance guard. Those working at the edge of what art has been, pushing toward what it might become. The term implies risk, not every avant-garde movement survives. → Art

A 17th-century style defined by drama, movement, and the play of light against shadow. Caravaggio. Bernini. Rembrandt. Everything that Minimalism would later reject. → Painting

Sculpture that projects slightly from a flat background, enough to suggest three dimensions without fully entering them. Common in architecture. Found on coins, friezes, and commemorative plaques. → Architecture

Forms that recall living things without depicting them literally. Soft, curved, irregular. Henry Moore’s sculptures. Joan Miró’s paintings. The body’s memory, expressed in abstraction. → Sculpture

The act of rubbing a surface, metal, ceramic, paper, to create a smooth, polished finish. A technique as old as metalworking. → Craft

Of or relating to the Eastern Roman Empire and its art: gold mosaics, formal figures, hieratic composition. A style that treated sacred images as windows into the divine, not representations of a physical world. → History

Light positioned behind a subject, creating a rim of illumination and often a silhouette. Used in photography and film to separate subjects from backgrounds and add a sense of depth. → Photography

A mode of art and architecture that draws from ancient Greek and Roman precedent: order, symmetry, clarity, restraint. The recurring counterweight to whatever excess precedes it. → Architecture

An image made by pasting together fragments of other images, text, and materials. Cubism introduced it. Dada weaponized it. It remains one of the defining visual languages of the 20th century. → Art

A style of abstract painting that used large areas of flat, resonant color as the primary subject. Mark Rothko. Helen Frankenthaler. Color itself as emotional architecture. → Painting

The deliberate arrangement of elements within a frame. Where things are placed in relation to each other, and to the edges, determines what the image means. → Visual Culture Guide

Work in which the idea is the artwork. The physical object, if it exists at all, is secondary. Sol LeWitt. Joseph Kosuth. Art that insists on thinking before looking. → Art

A Russian movement of the early 20th century that placed art in service of revolutionary politics. Clean geometry. Industrial materials. The belief that design could reorganize society. → Design

In architecture and design, the practice of designing in response to surroundings, to the scale, materials, and history of a specific place. → Architecture

The degree of difference between the lightest and darkest parts of an image. High contrast is bold and graphic. Low contrast is soft, subtle, atmospheric. → Photography

A photographic printing process that produces prints in Prussian blue. The origin of the word ‘blueprint.’ Anna Atkins used it to document botanical specimens in the 1840s, creating the first photographically illustrated book. → Photography

An anti-art movement born in Zurich during World War I, in response to the absurdity of industrial warfare. Collage. Found objects. Nonsense. The provocation that planted the seeds of Surrealism and Conceptual Art. → Art

The first commercially viable photographic process, announced in Paris in 1839. A unique, highly detailed image on a silver-coated copper plate. Each one a one-of-a-kind artifact. → Photography

An architectural movement, associated with Frank Gehry, Zaha Hadid, and Daniel Libeskind, that fragments, distorts, and disassembles traditional building forms. The Guggenheim Bilbao. The Jewish Museum Berlin. → Architecture

A Dutch movement that reduced painting and architecture to primary colors, black, white, and straight lines. Mondrian’s grids. The Rietveld Schröder House. The belief that simplicity was the highest form. → Architecture

The zone of sharpness in a photograph. A wide depth of field keeps everything in focus. A shallow depth of field blurs the background, isolating the subject, the characteristic look of a portrait taken with a wide aperture. → Photography

The philosophical position that knowledge comes from sensory experience, from observation rather than theory. In design, an empirical approach means testing what actually works, not what ought to. → Visual Culture Guide

A painting technique using pigmented wax. Known to ancient Greek and Roman painters. Revived by Jasper Johns, among others, for its rich surface texture. → Painting

A printmaking process in which lines are cut into a metal plate with a sharp tool, then filled with ink and pressed to paper. One of the oldest reproductive technologies, and still capable of exceptional precision. → Illustration

A mode of art that prioritizes emotional truth over observed reality. Colors intensified, forms distorted, perspective warped, all in the service of depicting inner experience. Edvard Munch. Ernst Ludwig Kirchner. The visual language of anxiety. → Painting

A short-lived but explosive movement led by Matisse, in which color was freed from descriptive function and used purely for emotional effect. When the critics saw the work, they called the painters les fauves, the wild beasts. → Painting

The perceptual relationship between a shape (the figure) and the space around it (the ground). Good design manipulates this relationship deliberately. The vase/face illusion is its classic demonstration. → Design

The technique of depicting an object as shorter than it actually is in order to convey depth. A pointed finger aimed at the viewer. Mantegna’s Dead Christ. The illusion of a body in space. → Painting

In visual art, the three-dimensional quality of an object, its volume, mass, and shape. Distinct from color, texture, or line. The sculptor’s primary concern. → Sculpture

The critical approach that evaluates art on the basis of its visual properties alone, line, color, form, composition, independent of subject matter or meaning. → Visual Culture Guide

Painting applied to wet plaster, which absorbs the pigment as it dries. The Sistine Chapel. The murals of Pompeii. An unforgiving medium: no corrections once the plaster sets. → Painting

An Italian movement of the early 20th century that celebrated speed, machinery, and violence, and rejected everything old. Futurist paintings tried to capture motion in a still image. Their politics were disastrous. Their visual energy was real. → Art

A measurement of lens aperture. A low f-stop (f/1.8) means a wide opening, more light, and a shallow depth of field. A high f-stop (f/16) means a narrow opening, less light, and a deep, sharp field. → Photography

The element in a composition that draws the eye first, and holds it. Created through contrast, placement, color, or sharpness. Every strong composition has one. → Photography

A category of subject matter in painting: portraiture, landscape, still life, history painting. Genre hierarchies defined the prestige of different painting types for centuries, history painting at the top, still life near the bottom. → Painting

A white preparatory coating applied to a surface before painting. Chalk or plaster mixed with binder. What makes a canvas ready to receive paint. → Painting

The principle that the whole is perceived as more than the sum of its parts. Gestalt psychology describes how we naturally group elements into unified forms, and how designers can exploit this tendency. → Design

A medieval European style characterized by pointed arches, ribbed vaults, flying buttresses, and vast stained-glass windows that transformed walls into light. A structural innovation that became a spiritual experience. → Architecture

An opaque watercolor, heavier body, more light-reflective, less transparent than standard watercolor. Used by illustrators, animators, and designers for its flat, matte finish. → Illustration

In photography: the visible texture produced by silver halide crystals in film emulsions, especially at high ISO speeds. Valued for its organic, unpredictable quality. In wood: the pattern of fibers, which determines both beauty and workability. → Photography

Relating to the sense of touch. Haptic design considers how an object feels, its weight, texture, temperature, not just how it looks. → Design

A state of visual coherence in which elements relate to each other in a way that feels right. Hard to define precisely, immediately felt when it’s present or absent. → Design

A lighting or photographic style dominated by bright tones, with minimal shadows. Airy, light, often associated with optimism or softness, the visual language of many fashion and beauty images. → Photography

In architecture, the practice of borrowing from historical styles. Victorian Gothic churches. Beaux-Arts train stations. The argument that past forms carry meaning and should be continued. → Architecture

Originally: a sacred image in Eastern Christian tradition, painted according to strict convention as a window onto the divine. Broadly: any image so potent it becomes a symbol, the Che Guevara portrait, the Marilyn Monroe silkscreen. → Culture

The influence of Japanese art and design on European artists in the late 19th century, particularly in the flatness, asymmetry, and bold outlines visible in Hiroshige’s woodblock prints. Van Gogh made copies of them. Monet built a Japanese garden at Giverny. → History

The deliberate placement of contrasting elements beside each other. Old and new. Rough and smooth. Sacred and profane. Meaning generated by proximity. → Art

Work that incorporates actual movement, mechanical, motorized, or wind-driven. Alexander Calder’s mobiles. Jean Tinguely’s machines. Art that changes with time and air. → Sculpture

Art or design that is sentimental, formulaic, and designed to comfort rather than challenge. Condemned by modernist critics; rehabilitated by Pop Art; endlessly debated. Andy Warhol saw beauty in it. → Art

A color reversal film produced by Kodak from 1935 to 2009. Known for vivid colors, fine grain, and exceptional archival stability. Its discontinuation was mourned by photographers worldwide. Paul Simon wrote a song about it. → Photography

A hard, often glossy finish applied to wood, metal, or other surfaces. In Asian decorative arts, lacquerware is a tradition of extraordinary refinement, built up in dozens of coats, each allowed to cure. → Craft

As a painting genre: the depiction of natural scenery. As a format: horizontal orientation (wider than tall), derived from how we see horizons. As a cultural form: a way of seeing land that frames it for aesthetic consumption. → Nature

The space between lines of type. Named for the strips of lead once placed between lines of metal type. Too little makes text suffocating. Too much dissolves its unity. → Graphic Design

A German camera brand that defined modern photosensitive documentary photography. Small, quiet, precise. Cartier-Bresson’s tool of choice. The machine that made street photography possible. → Photography

A relief printmaking technique in which a design is carved into linoleum, inked, and pressed to paper. Direct, bold, high-contrast. Associated with social realism and folk art as well as fine art prints. → Illustration

A small-scale model or sketch made in preparation for a larger work. Sculptors build maquettes in clay or wax. Architects use them to test ideas in three dimensions before committing to construction. → Sculpture

The material or technique used to make an artwork. Oil paint. Bronze. Video. The medium shapes the meaning, Marshall McLuhan was right about art, too. → Visual Culture Guide

Latin: remember you will die. A motif in art, the skull, the hourglass, the wilting flower, that reminds the viewer of mortality. Prevalent in 16th and 17th century still life painting. → Painting

A broad cultural movement of the late 19th and early 20th centuries that rejected tradition in favor of the new. In art: abstraction. In architecture: functionalism. In literature: stream of consciousness. In all of it: the rejection of ornament. → Architecture

An image, or design, executed in a single color (or in tones of a single color). Limitation as discipline. Constraint as clarity. → Photography

A recurring visual element, a shape, pattern, or image that appears consistently across a body of work or within a single piece. The triangle in Cézanne. The dot in Yayoi Kusama. → Visual Culture Guide

A large-scale painting made directly on a wall or ceiling. From the Latin murus, wall. The oldest art form we know, and still one of the most immediate. → Art

Art that tells a story, explicitly or implicitly. History painting. Medieval altarpieces. Hogarth’s moral sequences. The impulse to embed time in a still image. → Art

The space around and between subjects in an image. Not emptiness, presence. Skilled designers use negative space to create balance, tension, and secondary meaning. → Design

An 18th and 19th-century return to the formal principles of ancient Greece and Rome, triggered by archaeological discoveries at Pompeii and Herculaneum. David’s paintings. Jefferson’s architecture. The republic imagining itself as the Roman republic. → Architecture

Short for Optical Art. A style of the 1960s that used geometric patterns to create perceptual effects, the illusion of movement, vibration, or depth in a flat image. Bridget Riley. Victor Vasarely. → Art

The representation, and often misrepresentation, of the East by Western artists and scholars. Edward Said’s 1978 critique gave the term its current meaning: a mode of knowledge that served as a tool of cultural domination. → History

A drawing system that presents objects from a fixed viewpoint with no perspective distortion. Plans, elevations, and sections in architecture are orthographic. Precise and unambiguous, the language of making things. → Architecture

In design and photography: placing one image or element over another to create new meaning. In printmaking: printing one color on top of another to produce a third. → Graphic Design

The surface quality that develops on metal, wood, or stone through age and use. Bronze turning green. Silver darkening. Leather softening. Patina is proof of time, and, to those who value it, evidence of authenticity. → Craft

A system for representing three dimensions on a flat surface. Linear perspective, with its vanishing points and convergent lines, was codified in 15th-century Florence and governed Western painting for five centuries. → Painting

A composition assembled from fragments of different photographs. A technique of the Dada and Constructivist movements, later adopted by advertising, propaganda, and editorial design. → Graphic Design

A movement in late 19th-century photography that argued photography was a fine art, and proved it by making images that resembled paintings. Soft focus. Deliberate staging. The Photo-Secession movement led by Alfred Stieglitz. → Photography

The substance that gives paint, ink, or dye its color. Some pigments are ancient, ochre, charcoal, lapis lazuli. Some were revolutionary, Prussian blue, discovered accidentally in 1704. → Painting

A flat surface within a three-dimensional form. Cubism analyzed objects into their constituent planes. Sculptors feel for planes in clay. Architects design with planes of wall, floor, and ceiling. → Architecture

Painting outdoors, in direct response to light and atmosphere. The Impressionists championed it. A practice that values immediate observation over studio refinement. → Painting

A technique developed by Seurat in which tiny dots of pure color are applied to the canvas, mixing optically in the eye rather than physically on the palette. Scientific in intention. Shimmering in effect. → Painting

A movement that embraced commercial imagery, advertising, packaging, comic books, celebrity, as legitimate subject matter. Warhol. Lichtenstein. Hamilton. The collapse of the boundary between high and low culture. → Art

The cultural condition, and the style, that followed Modernism’s collapse. In architecture: historical ornament applied without conviction. In art: irony, appropriation, quotation. A position that doubts all positions. → Architecture

In pigment: red, yellow, and blue, the colors that cannot be mixed from other colors. In light: red, green, and blue. The distinction matters. → Design

The documented history of ownership of an artwork. Important for authentication, valuation, and the repatriation of works taken during war or colonization. → History

A decorative form consisting of four symmetrical lobes, like a four-leaf clover. Prevalent in Gothic architecture, appearing in window tracery, floor tiles, and carved stonework. → Architecture

The 19th-century movement that rejected idealization in favor of depicting contemporary life as it actually was, including the unglamorous. Gustave Courbet. Honoré Daumier. The workers, the poor, the unbeautiful. → Painting

Sculpture in which forms project from a flat background. High relief: deeply cut, almost three-dimensional. Low relief (bas-relief): barely raised from the surface. A middle ground between painting and sculpture. → Sculpture

An 18th-century style characterized by delicacy, asymmetry, and elaborate ornamentation. Pastels. Gilded curves. A decorative excess that the neoclassicists would react against with force. → Interior Design

A printmaking and commercial printing process in which ink is pushed through a stenciled mesh screen. Warhol industrialized it. It’s the process behind everything from the T-shirt you’re wearing to gallery editions selling for thousands. → Art

A design principle in which a digital or new object mimics the visual qualities of an older one. The early iPhone calendar that looked like leather. The notepad app with yellow ruled paper. A transitional comfort, or a failure of imagination, depending who you ask. → Design

A painting of inanimate objects, fruit, flowers, vessels, books. The genre was long considered lesser, but its best practitioners, Chardin, Morandi, Cézanne, used it to investigate form, light, and time. → Painting

Photography made in public space, without direction or staging, a practice of attentiveness. Cartier-Bresson. Vivian Maier. Garry Winogrand. The attempt to catch what would otherwise disappear. → Photography

An aesthetic category describing encounters that exceed beauty, that are overwhelming, even terrifying. Turner’s storms. Caspar David Friedrich’s lone figures before vast landscapes. The sensation of human smallness before natural scale. → Nature

The way pigments work: cyan, magenta, and yellow combined at full saturation produce black (in theory). The logic of printing and paint, as opposed to screens. → Design

A composition in which both halves are mirror images of each other. Associated with stability, formality, and the sacred, temples, altarpieces, government buildings. The baseline against which asymmetry is measured. → Design

An extreme form of chiaroscuro in which figures emerge dramatically from deep shadow. Caravaggio invented it. His followers, the Caravaggisti, spread it across Europe. → Painting

A pattern formed by shapes that fit together without gaps or overlaps. M.C. Escher’s interlocking birds and fish. Islamic tilework. A mathematical principle that generates infinite visual complexity from a repeating unit. → Design

The surface quality of a material, rough, smooth, matte, glossy, and the representation of that quality in image-making. In photography, texture is revealed by raking light. In painting, it can be built with thick impasto or suggested by brushwork. → Photography

The relative lightness or darkness of a color. The quality that determines composition in black-and-white photography and underpainting in oil. Two colors can look identical in a grayscale image despite being completely different hues. → Photography

The detailed description or representation of a landscape’s features, elevation, terrain, natural and man-made features. In art history, topographical views were a distinct genre of landscape painting. → Nature

French for deceive the eye. Painting rendered so illusionistically that the viewer is momentarily convinced they’re looking at a real object or space. A demonstration of skill, but also a meditation on representation itself. → Painting

A genre of Japanese woodblock prints from the Edo period (17th–19th centuries). The term means pictures of the floating world, the fleeting pleasures of urban life. Hokusai. Hiroshige. Images that helped define Western Impressionism when they arrived in Europe. → Illustration

An initial layer of paint applied to establish composition, tonal values, and overall design. Often executed in monochrome. The foundation on which subsequent transparent layers are glazed. → Painting

The quality of a composition in which all elements feel as though they belong together. Not uniformity, but coherence. The goal toward which all formal decisions tend. → Design

The lightness or darkness of a color. One of the fundamental dimensions of color, along with hue and saturation. High-value colors tend toward white. Low-value colors tend toward black. → Photography

The point on the horizon where parallel lines appear to converge in a linear perspective drawing. One-point perspective has one. Two-point perspective has two. The organizing logic of Western pictorial space since the Renaissance. → Architecture

The position from which an image is seen or a photograph taken. High, low, frontal, oblique. One of the most powerful decisions a photographer or painter makes. → Photography

Buildings designed not by architects but by tradition, local materials, inherited forms, accumulated knowledge. The farmhouse. The fishing village. Architecture that belongs to a place because it grew from it. → Architecture

Color temperatures, relative to each other. Reds, oranges, and yellows feel warm. Blues, greens, and violets feel cool. Light sources and shadows have temperatures. The interplay between warm and cool is fundamental to realistic painting. → Photography

The oldest known printmaking technique. An image carved in relief on a wooden block, inked, and pressed to paper. From Dürer’s dramatic Northern Renaissance prints to the bold forms of Japanese ukiyo-e. → Illustration

Electrostatic dry photocopying, the technical process behind the photocopier. Transformed document reproduction in the 20th century, and became a tool for artists seeking to multiply, distort, and transmit images cheaply and instantly. → Graphic Design

The highest point. In architectural drawing, a zenith view looks straight down, a plan view at its most extreme. In photography, a zenithal shot is taken from directly above the subject.