prepubertal vs prepuberty

prepubertal is not a noun while prepuberty is a noun.

Word	Noun	Adjective	Verb	Adverb
prepubertal	No	Yes	No	No
prepuberty	Yes	No	No	No

prepubertal (noun)	prepuberty (noun)
	a period of two years immediately prior to the onset of puberty when growth and changes leading to sexual maturity occur

prepubertal (adjective)	prepuberty (adjective)
(especially of human beings) at the age immediately before puberty; often marked by accelerated growth