Gas light, a term commonly used to refer to a type of lighting that uses gas as its fuel source, has several synonyms. One of them is "gas lamp," which is a more formal way of saying gas light. Other synonyms include "gas lantern," "gas fixture," and "gas torch." These synonyms are often used interchangeably, although "gas lantern" specifically refers to a gas light that is designed to be portable, while a "gas fixture" is an installed gas light in a home or building. In modern times, gas lights have largely been replaced by electric lighting, but the historical and aesthetic appeal of gas lamps makes them still popular in some areas.