adversary vs resister

adversary and resister both are nouns.

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

As nouns, adversary and resister are synonyms defined as:

Other synonyms of adversary include antagonist, opponent, opposer.

adversary (noun)	resister (noun)
someone who offers opposition	someone who systematically obstructs some action that others want to take
	someone who offers opposition