resister vs obstructionist

resister and obstructionist both are nouns.

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

As nouns, resister and obstructionist are synonyms defined as:

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

Other synonyms of resister include obstructer, obstructor, thwarter.

resister (noun)	obstructionist (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