normalcy vs abnormal

normalcy is a noun but abnormal is not a noun.

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

normalcy (noun)	abnormal (noun)
expectedness as a consequence of being usual or regular or common
being within certain limits that define the range of normal functioning

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