aberrant vs unnatural

aberrant is a noun but unnatural is not a noun.

Word	Noun	Adjective	Verb	Adverb
aberrant	Yes	Yes	No	No
unnatural	No	Yes	No	No

aberrant (noun)	unnatural (noun)
one whose behavior departs substantially from the norm of a group

aberrant (adjective)	unnatural (adjective)
markedly different from an accepted norm	not in accordance with or determined by nature; contrary to nature
	not normal; not typical or usual or regular or conforming to a norm
	speaking or behaving in an artificial way to make an impression