pelage vs fur

pelage and fur both are nouns.

Word	Noun	Adjective	Verb	Adverb
pelage	Yes	No	No	No
fur	Yes	No	No	No

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

pelage: growth of hair or wool or fur covering the body of an animal
fur: dense coat of fine silky hairs on mammals (e.g., cat or seal or weasel)

Other hyponyms of pelage include fleece, wool.

pelage (noun)	fur (noun)
growth of hair or wool or fur covering the body of an animal	dense coat of fine silky hairs on mammals (e.g., cat or seal or weasel)
	a garment made of animal pelts or synthetic fur
	the dressed hairy coat of a mammal