departure vs depart

departure is a noun but depart is not a noun.

Word	Noun	Adjective	Verb	Adverb
departure	Yes	No	No	No
depart	No	No	Yes	No

departure (noun)	depart (noun)
the act of departing
euphemistic expressions for death
a variation that deviates from the standard or norm

departure (verb)	depart (verb)
	go away or leave
	depart for someplace
	wander from a direct or straight course
	move away from a place into another direction
	remove oneself from an association with or participation in
	be at variance with; be out of line with