animal fiber vs wool

animal fiber and wool both are nouns.

Word	Noun	Adjective	Verb	Adverb
animal fiber	Yes	No	No	No
wool	Yes	No	No	No

As nouns, wool is a hyponym of animal fiber; that is, wool is a word with a more specific, narrower meaning than animal fiber:

animal fiber: fiber derived from animals
wool: fiber sheared from animals (such as sheep) and twisted into yarn for weaving

Other hyponyms of animal fiber include horsehair, silk.

animal fiber (noun)	wool (noun)
fiber derived from animals	outer coat of especially sheep and yaks
	a fabric made from the hair of sheep
	fiber sheared from animals (such as sheep) and twisted into yarn for weaving