thwarter vs obstructer

thwarter and obstructer both are nouns.

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

As nouns, thwarter and obstructer are synonyms defined as:

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

Other synonyms of thwarter include obstructionist, obstructor, resister.

thwarter (noun)	obstructer (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