The term "light fixtures" generally refers to any device that houses an electric lamp for the purpose of illuminating a space. However, there are a variety of synonyms for this phrase, including "lighting fixtures", "lighting units", and "luminaires". Another related term is "lighting systems", which refers to the collective set of light fixtures and controls used in a particular space or environment. Other descriptors commonly used to differentiate types of light fixtures include "ceiling fixtures", "wall sconces", "table lamps", "floor lamps" and "chandeliers." All of these synonyms and descriptors are useful for conveying specifics about the type, style, and function of a particular light fixture.