oil vs oleo

oil and oleo both are nouns.

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

oil (noun)	oleo (noun)
oil paint containing pigment that is used by an artist	a spread made chiefly from vegetable oils and used as a substitute for butter
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

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