wane vs decrease

wane and decrease both are nouns.

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

As verbs, decrease is a hypernym of wane; that is, decrease is a word with a broader meaning than wane:

Other hypernyms of wane include diminish, fall, lessen.

As verbs, decrease is a hypernym of wane; that is, decrease is a word with a broader meaning than wane:

Other hypernyms of wane include diminish, fall, lessen.

As verbs, decrease is a hypernym of wane; that is, decrease is a word with a broader meaning than wane:

Other hypernyms of wane include diminish, fall, lessen.

wane (noun)	decrease (noun)
a gradual decline (in size or strength or power or number)	the act of decreasing or reducing something
	the amount by which something decreases
	a change downward
	a process of becoming smaller or shorter

wane (verb)	decrease (verb)
become smaller	decrease in size, extent, or range
decrease in phase	make become smaller
grow smaller