wilt vs weaken

wilt is a noun but weaken is not a noun.

Word	Noun	Adjective	Verb	Adverb
wilt	Yes	No	Yes	No
weaken	No	No	Yes	No

As verbs, weaken is a hypernym of wilt; that is, weaken is a word with a broader meaning than wilt:

wilt (noun)	weaken (noun)
causing to become limp or drooping
any plant disease characterized by drooping and shriveling; usually caused by parasites attacking the roots

wilt (verb)	weaken (verb)
become limp	become weaker
lose strength	lessen the strength of
	reduce the level or intensity or size or scope of
	lessen in force or effect
	destroy property or hinder normal operations