resister vs thwarter

resister and thwarter both are nouns.

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

As nouns, resister and thwarter are synonyms defined as:

resister and thwarter: someone who systematically obstructs some action that others want to take

Other synonyms of resister include obstructer, obstructionist, obstructor.

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