What is the difference between a lamp and a luminaire?

The difference between a lamp and a luminaire is that a luminaire is a full lighting unit that includes a lamp or lamps as well as the components that distribute the light, whereas luminaires can be traditional incandescent, fluorescent, or other electric-discharge luminaires. While the precise term for this type of light source is "lamp," the term "bulb" is more generally used. Shop a range of antique and vintage lamps and luminaires on 1stDibs.