calf vs calfskin

calf and calfskin both are nouns.

Word	Noun	Adjective	Verb	Adverb
calf	Yes	No	No	No
calfskin	Yes	No	No	No

As nouns, calf and calfskin are synonyms defined as:

calf (noun)	calfskin (noun)
young of domestic cattle	fine leather from the skin of a calf
young of various large placental mammals e.g. whale or giraffe or elephant or buffalo
the muscular back part of the shank
fine leather from the skin of a calf