olive oil vs oil

olive oil and oil both are nouns.

Word	Noun	Adjective	Verb	Adverb
olive oil	Yes	No	No	No
oil	Yes	No	Yes	No

As nouns, oil is a hypernym of olive oil; that is, oil is a word with a broader meaning than olive oil:

Other hypernyms of olive oil include vegetable oil.

olive oil (noun)	oil (noun)
oil from olives	oil paint containing pigment that is used by an artist
	any of a group of liquid edible fats that are obtained from plants
	a slippery or viscous liquid or liquefiable substance not miscible with water
	a dark oil consisting mainly of hydrocarbons

olive oil (verb)	oil (verb)
	administer an oil or ointment to; often in a religious ceremony of blessing
	cover with oil, as if by rubbing