diverge vs deviate

diverge is not a noun while deviate is a noun.

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

As verbs, diverge and deviate are synonyms defined as:

Other synonyms of diverge include depart, vary.

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

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

diverge (verb)	deviate (verb)
move or draw apart	turn aside; turn away from
extend in a different direction	cause to turn away from a previous or expected course
be at variance with; be out of line with	be at variance with; be out of line with
have no limits as a mathematical series