kid vs leather

kid and leather both are nouns.

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

As nouns, leather is a hypernym of kid; that is, leather is a word with a broader meaning than kid:

kid: soft smooth leather from the hide of a young goat
leather: an animal skin made smooth and flexible by removing the hair and then tanning

kid (noun)	leather (noun)
young goat	an animal skin made smooth and flexible by removing the hair and then tanning
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

kid (verb)	leather (verb)
be silly or tease one another	whip with a leather strap
tell false information to for fun