exit vs asphyxiate

exit is a noun but asphyxiate is not a noun.

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

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

exit: pass from physical life and lose all bodily attributes and functions necessary to sustain life
asphyxiate: be asphyxiated; die from lack of oxygen

Other hyponyms of exit include abort, stifle, suffocate, buy it, pip out, drown, predecease, famish, starve, fall, succumb, yield.

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

exit (verb)	asphyxiate (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	be asphyxiated; die from lack of oxygen
lose the lead	deprive of oxygen and prevent from breathing
move out of or depart from	impair the respiration of or obstruct the air passage of