die out vs go away

die out and go away both are verbs.

Word	Noun	Adjective	Verb	Adverb
die out	No	No	Yes	No
go away	No	No	Yes	No

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

Other hypernyms of die out include disappear, vanish.

die out (verb)	go away (verb)
become extinct	get lost, as without warning or explanation
cut or shape with a die	go away from a place
	move away from a place into another direction
	become invisible or unnoticeable