oleomargarine vs margarine

oleomargarine and margarine both are nouns.

Word	Noun	Adjective	Verb	Adverb
oleomargarine	Yes	No	No	No
margarine	Yes	No	No	No

As nouns, oleomargarine and margarine are synonyms defined as:

oleomargarine and margarine: a spread made chiefly from vegetable oils and used as a substitute for butter

Other synonyms of oleomargarine include margarin, marge, oleo.

oleomargarine (noun)	margarine (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