Component natural gas is a mixture of four gases: METHANE (7 letters), ethane (6 letters), FUEL (4 letters) and AIR (3 letters). METHANE is the primary component of natural gas, making up around 80-90% of the total volume. Ethane is the second most abundant component, making up around 10-20%. FUEL is a combustible gas that is used as a source of energy, and AIR is a mixture of nitrogen, oxygen, and other gases. Together, these four components make up natural gas, which is used for heating, cooking, and electricity generation.