tapering vs narrowing

tapering and narrowing both are nouns.

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

As adjectives, tapering and narrowing are synonyms defined as:

Other synonyms of tapering include tapered.

tapering (noun)	narrowing (noun)
the act of gradually lowering the size or amount	the act of making something narrower
	an instance of becoming narrow
	a decrease in width

tapering (adjective)	narrowing (adjective)
gradually decreasing until little remains	(of circumstances) tending to constrict freedom
becoming gradually narrower	becoming gradually narrower