exit vs go away

exit is a noun but go away is not a noun.

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

As verbs, go away is a hyponym of exit; that is, go away is a word with a more specific, narrower meaning than exit:

exit (noun)	go away (noun)
the act of going out
an opening that permits escape or release
euphemistic expressions for death

exit (verb)	go away (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	get lost, as without warning or explanation
lose the lead	go away from a place
move out of or depart from	move away from a place into another direction
	become invisible or unnoticeable