natural gas
Synonym discussion
Sense: noun/1
'Gas' is the shortest everyday alternative, common in phrases like 'gas stove' or 'gas bill', but it can cause confusion because in American English 'gas' also means petrol for cars. 'Fossil fuel' is a broad category covering coal, oil, and natural gas — use it when contrasting with renewable sources rather than when naming a specific energy type. 'Methane' is the main chemical component (CH4) of natural gas, but it is a scientific term used by chemists or in climate discussions, not in everyday conversation. 'Propane' is a separate gas often stored in tanks for barbecues or rural heating; it is a by-product of natural gas processing but is not the same substance. If you are talking about heating your home, 'natural gas' (or simply 'gas' in British English) is the correct choice.
Common collocations
Etymology
The word 'natural' comes from Latin 'naturalis' (by birth, according to nature). The word 'gas' was invented in the 1600s by the Flemish chemist Jan Baptist van Helmont, who adapted it from the Greek word 'chaos'. He used it to describe a substance that could not be held in a container like a liquid or solid. The compound 'natural gas' was first used in English in the early 1800s to distinguish gas found in nature from 'manufactured gas' made from coal.
First known use
1825
1825, in the meaning defined at sense 1