oleo vs margarin

oleo and margarin both are nouns.

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

As nouns, oleo and margarin are synonyms defined as:

oleo and margarin: a spread made chiefly from vegetable oils and used as a substitute for butter

Other synonyms of oleo include margarine, marge, oleomargarine.

oleo (noun)	margarin (noun)
a spread made chiefly from vegetable oils and used as a substitute for butter	a spread made chiefly from vegetable oils and used as a substitute for butter
	a glyceryl ester of margaric acid