walk out vs go away

walk out and go away both are verbs.

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

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

Other hypernyms of walk out include go forth, leave.

walk out (verb)	go away (verb)
leave suddenly, often as an expression of disapproval	get lost, as without warning or explanation
leave abruptly, often in protest or anger	go away from a place
stop work in order to press demands	move away from a place into another direction
	become invisible or unnoticeable