A gas lamp is a type of lighting fixture that uses natural gas as its primary source of fuel. It is often used as an outdoor light source to provide illumination in streets, parks, and public spaces. However, there are other words that can be used to describe a gas lamp. Some of these synonyms include gaslight, gas lantern, gas street light, gas-powered lamp, and gas post light. Each synonym has its own unique characteristics and may be used in different contexts. Nonetheless, they all refer to the same type of lighting fixture that uses natural gas to generate light.