Natural gas is a fossil fuel that is widely used around the world for heating, cooking, and electricity generation. The term 'natural gas' refers to methane, which is the primary component of the gas. There are many other words and phrases that can be used as synonyms for natural gas, including fuel gas, fossil gas, methane gas, pipeline gas, and hydrocarbon gas. Other variations include shale gas, which is extracted from shale formations using hydraulic fracturing techniques, and biogas, which is produced from organic matter such as animal waste, food waste, and agricultural residue. Despite its many synonyms, natural gas remains a valuable resource for modern society, providing a reliable and cost-effective source of energy for millions of people worldwide.