widening vs narrowing

widening and narrowing both are nouns.

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

widening (noun)	narrowing (noun)
the act of making something wider	the act of making something narrower
a part of a road that has been widened to allow cars to pass or park	an instance of becoming narrow
an increase in width	a decrease in width

widening (adjective)	narrowing (adjective)
	(of circumstances) tending to constrict freedom
	becoming gradually narrower