pelt vs lambskin

pelt and lambskin both are nouns.

Word	Noun	Adjective	Verb	Adverb
pelt	Yes	No	Yes	No
lambskin	Yes	No	No	No

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

pelt (noun)	lambskin (noun)
body covering of a living animal	the skin of a lamb with the wool still on
the dressed hairy coat of a mammal	skin of a sheep or goat prepared for writing on

pelt (verb)	lambskin (verb)
attack and bombard with or as if with missiles
cast, hurl, or throw repeatedly with some missile
rain heavily