impediment vs obstructor

impediment and obstructor both are nouns.

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

As nouns, impediment and obstructor are synonyms defined as:

Other synonyms of impediment include impedimenta, obstructer, obstruction.

impediment (noun)	obstructor (noun)
any structure that makes progress difficult	any structure that makes progress difficult
something immaterial that interferes with or delays action or progress	someone who systematically obstructs some action that others want to take