fail vs exit

fail is not a noun while exit is a noun.

Word	Noun	Adjective	Verb	Adverb
fail	No	No	Yes	No
exit	Yes	No	Yes	No

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

fail (verb)	exit (verb)
stop operating or functioning	pass from physical life and lose all bodily attributes and functions necessary to sustain life
deteriorate	lose the lead
prove insufficient	move out of or depart from
disappoint, prove undependable to; abandon, forsake
become bankrupt or insolvent; fail financially and close
be unsuccessful
fail to get a passing grade
fail to do something; leave something undone
judge unacceptable
be unable
fall short in what is expected