decreasing vs decrescendo

decreasing is not a noun while decrescendo is a noun.

Word	Noun	Adjective	Verb	Adverb
decreasing	No	Yes	No	No
decrescendo	Yes	Yes	Yes	No

decreasing (noun)	decrescendo (noun)
	(music) a gradual decrease in loudness

decreasing (adjective)	decrescendo (adjective)
becoming less or smaller	(music) gradually decreasing in volume
(music) decreasing in tempo and/or volume

decreasing (verb)	decrescendo (verb)
	grow quieter