antagonist vs resister

antagonist and resister both are nouns.

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

As nouns, antagonist and resister are synonyms defined as:

Other synonyms of antagonist include adversary, opponent, opposer.

antagonist (noun)	resister (noun)
a drug that neutralizes or counteracts the effects of another drug	someone who systematically obstructs some action that others want to take
a muscle that relaxes while another contracts	someone who offers opposition
someone who offers opposition