obstructionist vs obstructor

obstructionist and obstructor both are nouns.

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

As nouns, obstructionist and obstructor are synonyms defined as:

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

Other synonyms of obstructionist include obstructer, resister, thwarter.

obstructionist (noun)	obstructor (noun)
someone who systematically obstructs some action that others want to take	any structure that makes progress difficult
	someone who systematically obstructs some action that others want to take