puberty vs pubescence

puberty and pubescence both are nouns.

Word	Noun	Adjective	Verb	Adverb
puberty	Yes	No	No	No
pubescence	Yes	No	No	No

As nouns, puberty and pubescence are synonyms defined as:

puberty and pubescence: the time of life when sex glands become functional

puberty (noun)	pubescence (noun)
the time of life when sex glands become functional	the time of life when sex glands become functional