abnormal vs psychological science

abnormal is not a noun while psychological science is a noun.

Word	Noun	Adjective	Verb	Adverb
abnormal	No	Yes	No	No
psychological science	Yes	No	No	No

abnormal (noun)	psychological science (noun)
	the science of mental life

abnormal (adjective)	psychological science (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