abnormal vs aberrant

abnormal is not a noun while aberrant is a noun.

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

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

abnormal (adjective)	aberrant (adjective)
not normal; not typical or usual or regular or conforming to a norm	markedly different from an accepted norm
departing from the normal in e.g. intelligence and development
much greater than the normal