foeman vs antagonist

foeman and antagonist both are nouns.

Word	Noun	Adjective	Verb	Adverb
foeman	Yes	No	No	No
antagonist	Yes	No	No	No

As nouns, antagonist is a hypernym of foeman; that is, antagonist is a word with a broader meaning than foeman:

foeman: an armed adversary (especially a member of an opposing military force)
antagonist: someone who offers opposition

Other hypernyms of foeman include adversary, opponent, opposer, resister.

foeman (noun)	antagonist (noun)
an armed adversary (especially a member of an opposing military force)	a drug that neutralizes or counteracts the effects of another drug
	a muscle that relaxes while another contracts
	someone who offers opposition