depart vs departure

depart is not a noun while departure is a noun.

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

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

depart (verb)	departure (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