This document discusses different types of lighting used in buildings, including ambient lighting, task lighting, aesthetic lighting, accent lighting, and different lighting fixtures. It describes ambient lighting as general lighting that substitutes for natural light. Task lighting provides increased light for specific tasks. Aesthetic lighting uses the light fixture as a design element. Accent lighting emphasizes objects by focusing light on them. Common fixtures mentioned include recessed lights, desk lamps, pendants, wall lamps, chandeliers, and direct and indirect lighting.