margarine vs margarin

margarine and margarin both are nouns.

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

As nouns, margarine and margarin are synonyms defined as:

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

Other synonyms of margarine include marge, oleo, oleomargarine.

margarine (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