abnormal vs normal

abnormal is not a noun while normal is a noun.

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

abnormal (noun)	normal (noun)
	something regarded as a normative example

abnormal (adjective)	normal (adjective)
not normal; not typical or usual or regular or conforming to a norm	conforming with or constituting a norm or standard or level or type or social norm; not abnormal
departing from the normal in e.g. intelligence and development	in accordance with scientific laws
much greater than the normal	being approximately average or within certain limits in e.g. intelligence and development
	forming a right angle