exit vs expiry

exit and expiry both are nouns.

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

As nouns, expiry is a hypernym of exit; that is, expiry is a word with a broader meaning than exit:

Other hypernyms of exit include death, decease.

exit (noun)	expiry (noun)
the act of going out	the event of dying or departure from life
an opening that permits escape or release	a coming to an end of a contract period
euphemistic expressions for death

exit (verb)	expiry (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life
lose the lead
move out of or depart from