narrowing vs constrictive

narrowing is a noun but constrictive is not a noun.

Word	Noun	Adjective	Verb	Adverb
narrowing	Yes	Yes	No	No
constrictive	No	Yes	No	No

As adjectives, narrowing and constrictive are synonyms defined as:

narrowing and constrictive: (of circumstances) tending to constrict freedom

Other synonyms of narrowing include constricting.

narrowing (noun)	constrictive (noun)
the act of making something narrower
an instance of becoming narrow
a decrease in width

narrowing (adjective)	constrictive (adjective)
(of circumstances) tending to constrict freedom	(of circumstances) tending to constrict freedom
becoming gradually narrower	restricting the scope or freedom of action