wary vs alert

wary is not a noun while alert is a noun.

Word	Noun	Adjective	Verb	Adverb
wary	No	Yes	No	No
alert	Yes	Yes	Yes	No

wary (noun)	alert (noun)
	a warning serves to make you more alert to danger
	an automatic signal (usually a sound) warning of danger
	condition of heightened watchfulness or preparation for action

wary (adjective)	alert (adjective)
marked by keen caution and watchful prudence	engaged in or accustomed to close observation
openly distrustful and unwilling to confide	mentally perceptive and responsive
	quick and energetic

wary (verb)	alert (verb)
	warn or arouse to a sense of danger or call to a state of preparedness