offspring vs kid

offspring and kid both are nouns.

Word	Noun	Adjective	Verb	Adverb
offspring	Yes	No	No	No
kid	Yes	No	Yes	No

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

offspring (noun)	kid (noun)
any immature animal	young goat
something that comes into existence as a result	a young person of either sex
the immediate descendants of a person	a human offspring (son or daughter) of any age
	soft smooth leather from the hide of a young goat

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