deviate vs depart

deviate is a noun but depart is not a noun.

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

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

Other hyponyms of deviate include yaw, detour, digress, sidetrack, straggle.

As verbs, deviate and depart are synonyms defined as:

Other synonyms of deviate include diverge, vary.

deviate (noun)	depart (noun)
a person whose behavior deviates from what is acceptable especially in sexual behavior

deviate (adjective)	depart (adjective)
markedly different from an accepted norm

deviate (verb)	depart (verb)
turn aside; turn away from	go away or leave
cause to turn away from a previous or expected course	depart for someplace
be at variance with; be out of line with	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