margarin vs oleo

margarin and oleo both are nouns.

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

As nouns, margarin and oleo are synonyms defined as:

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

Other synonyms of margarin include margarine, marge, oleomargarine.

margarin (noun)	oleo (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