oil

An oil is a liquid that comes from the ground and is used as fuel or in cooking.

You might have heard of oil being used to power cars, airplanes, and even some homes. People often talk about prices going up or down for crude oil, which sounds complicated but just means how much money it costs to buy a certain amount of oil. But oil isn't just for machines - it's also what you use when cooking at home, especially if you're making something like fried chicken or roast vegetables. Some people even use special oils in their hair and skin care routines because they think they have good effects on the body.