Gaz is a term often used to refer to a type of fuel, specifically natural gas, which is primarily composed of methane. It is a clean-burning fossil fuel that is used for heating, cooking, and generating electricity. Natural gas is extracted from underground reservoirs and is considered a more environmentally friendly option compared to other fossil fuels like coal and oil. In addition to its use as a fuel, gaz can also refer to the gaseous state of matter in general. Gases, such as oxygen and carbon dioxide, have no fixed shape or volume and expand to fill their containers. This property makes them essential in various applications, including industrial processes and the atmosphere.