deviate vs diverge

deviate is a noun but diverge is not a noun.

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

As verbs, deviate and diverge are synonyms defined as:

Other synonyms of deviate include depart, vary.

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

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

deviate (verb)	diverge (verb)
turn aside; turn away from	move or draw apart
cause to turn away from a previous or expected course	extend in a different direction
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