shrinking vs decrease

shrinking and decrease both are nouns.

Word	Noun	Adjective	Verb	Adverb
shrinking	Yes	No	No	No
decrease	Yes	No	Yes	No

As nouns, decrease is a hypernym of shrinking; that is, decrease is a word with a broader meaning than shrinking:

Other hypernyms of shrinking include diminution, reduction, step-down.

As nouns, decrease is a hypernym of shrinking; that is, decrease is a word with a broader meaning than shrinking:

Other hypernyms of shrinking include drop-off, lessening.

shrinking (noun)	decrease (noun)
the act of becoming less	the act of decreasing or reducing something
process or result of becoming less or smaller	the amount by which something decreases
	a change downward
	a process of becoming smaller or shorter

shrinking (verb)	decrease (verb)
	decrease in size, extent, or range
	make become smaller