human vs prepubescent

human is a noun but prepubescent is not a noun.

Word	Noun	Adjective	Verb	Adverb
human	Yes	Yes	No	No
prepubescent	No	Yes	No	No

human (noun)	prepubescent (noun)
any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage

human (adjective)	prepubescent (adjective)
having human form or attributes as opposed to those of animals or divine beings	(especially of human beings) at the age immediately before puberty; often marked by accelerated growth
characteristic of humanity
relating to a person