Lighting
18 lighting terms used in interior design, each with a clear definition and how to use it.
Accent lighting
Accent lighting is decorative, directional illumination used to highlight specific features in a room, art, architecture, plants, sculptural objects. One of the three traditional layers of lighting (alongside ambient and task), accent lighting adds drama and visual hierarchy by drawing the eye to deliberately chosen focal points.
Ambient lighting
Ambient lighting is the general, overall illumination of a room, providing the base layer of light that allows you to see and move through a space safely. One of the three traditional layers of lighting design (alongside task and accent), it typically comes from ceiling-mounted fixtures, sconces, and natural light.
Chandelier
A chandelier is a decorative ceiling-mounted light fixture with multiple branches or arms holding lights, traditionally candles, now bulbs. Used for both functional ambient lighting and as a major decorative focal point, particularly in dining rooms, entryways, primary bedrooms, and grand spaces.
Color temperature (Kelvin)
Color temperature is a measure of light's color, expressed in degrees Kelvin (K), ranging from warm yellow-orange (1800-2700K) to neutral white (3000-4000K) to cool blue-white daylight (5000K+). The single most important specification when buying LED bulbs for residential use.
CRI (Color Rendering Index)
CRI (Color Rendering Index) measures how accurately a light source renders colors compared to natural sunlight or a perfect reference light. CRI is measured on a 0-100 scale: sunlight is 100; standard LED bulbs typically rate 80; premium LEDs rate 90+; specialty LEDs rate 95+. CRI matters most for spaces where color accuracy is important, kitchens (food appearance), bathrooms (skin tones), and art display.
Edison bulb
An Edison bulb (also called a vintage filament bulb or carbon filament bulb) is a decorative incandescent or LED bulb with visible exposed filaments, designed to mimic the look of Thomas Edison's original 1880s carbon filament bulbs. Used as decorative light fixtures in industrial, farmhouse, and vintage-influenced interior design, Edison bulbs became extremely popular 2010-2016 and have since become somewhat dated.
Floor lamp
A floor lamp is a tall standalone light fixture that sits on the floor, typically 50-70 inches tall with a base, vertical pole, and light source at the top. Floor lamps provide ambient or task lighting where overhead fixtures are inadequate, fill empty corners, define seating areas, and add architectural interest to rooms.
Flush mount
A flush mount is a ceiling light fixture installed directly against the ceiling, with no visible drop or hanging distance. Used primarily in rooms with low ceilings (under 8 feet) or where overhead clearance matters, flush mounts provide ambient lighting without occupying vertical space and come in a vast range of styles from minimal to decorative.
Lumens
Lumens are the standard unit of measurement for the total amount of visible light emitted by a light source. Unlike watts (which measure energy consumption), lumens measure brightness directly, making them the relevant metric when choosing LED bulbs. A traditional 60W incandescent bulb produces about 800 lumens; the same brightness in LED uses only 8-10 watts.
Pendant light
A pendant light is a single light fixture suspended from the ceiling by a cord, chain, or rod, providing focused downward or omnidirectional light. Used over kitchen islands, dining tables, entryways, and as decorative architectural moments throughout a home.
Picture light
A picture light is a small horizontal light fixture designed to illuminate a specific piece of art mounted above it on the wall. Originally developed in the 18th and 19th centuries for art display in European homes and galleries, picture lights remain the classical solution for spotlighting paintings, photographs, and decorative wall objects, adding both functional illumination and substantial decorative character.
Recessed lighting
Recessed lighting (also called can lights, pot lights, or downlights) is a ceiling light fixture installed flush with the ceiling, with the light source and housing tucked above the ceiling plane, producing direct downward illumination without a visible fixture. Used for general ambient lighting and task lighting throughout modern homes.
Sconce
A sconce is a wall-mounted light fixture, projecting outward from the wall, used for ambient and accent lighting. Originally designed for candles, modern sconces use bulbs but retain the wall-mounted form factor, adding architectural detail and intentional light layering to rooms.
Semi-flush mount
A semi-flush mount is a ceiling light fixture that hangs slightly below the ceiling (typically 4-12 inches), providing more visual presence than a full flush mount without the substantial drop of a pendant or chandelier. Semi-flush mounts work in rooms with 8-9 foot ceilings where pure flush feels too minimal but pendant would feel too low.
Smart lighting
Smart lighting refers to lighting systems controlled via smartphone apps, voice commands, automated schedules, or sensors, enabling features like remote control, customizable scenes, color tuning, and integration with home automation systems. Major systems include Philips Hue, LIFX, Lutron Caseta, and integrations with Google Home, Amazon Alexa, and Apple HomeKit.
Table lamp
A table lamp is a small light fixture designed to sit on a surface, typically a side table, console, desk, or nightstand. Table lamps provide task and accent lighting at human scale, define seating zones, add decorative character, and are essential to layered residential lighting. They range from minimal modern designs to substantial traditional and Hollywood Regency statements.
Task lighting
Task lighting is focused, directional illumination dedicated to a specific activity, reading, cooking, applying makeup, working at a desk, sewing. One of the three traditional layers of lighting (alongside ambient and accent), task lighting reduces eye strain and provides the high-output light needed for detailed work.
Track lighting
Track lighting is a lighting system in which multiple adjustable light heads are mounted on a single conductive rail (the "track") attached to the ceiling. Originally developed for retail and commercial applications, track lighting offers flexibility to illuminate specific features, useful for art display, kitchens, work areas, and gallery walls.