wither vs go away

wither and go away both are verbs.

Word	Noun	Adjective	Verb	Adverb
wither	No	No	Yes	No
go away	No	No	Yes	No

As verbs, go away is a hypernym of wither; that is, go away is a word with a broader meaning than wither:

Other hypernyms of wither include disappear, vanish.

wither (verb)	go away (verb)
wither, as with a loss of moisture	get lost, as without warning or explanation
lose freshness, vigor, or vitality	go away from a place
	move away from a place into another direction
	become invisible or unnoticeable