juvenile person vs kid

juvenile person and kid both are nouns.

Word	Noun	Adjective	Verb	Adverb
juvenile person	Yes	No	No	No
kid	Yes	No	Yes	No

As nouns, kid is a hyponym of juvenile person; that is, kid is a word with a more specific, narrower meaning than juvenile person:

juvenile person (noun)	kid (noun)
a young person, not fully developed	young goat
	a young person of either sex
	a human offspring (son or daughter) of any age
	soft smooth leather from the hide of a young goat

juvenile person (verb)	kid (verb)
	be silly or tease one another
	tell false information to for fun