resist vs resister

resist is not a noun while resister is a noun.

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

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

resist (verb)	resister (verb)
stand up or offer resistance to somebody or something
withstand the force of something
refuse to comply
express opposition through action or words
elude, especially in a baffling way
resist immunologically the introduction of some foreign tissue or organ