cashmere vs wool

cashmere and wool both are nouns.

Word	Noun	Adjective	Verb	Adverb
cashmere	Yes	No	No	No
wool	Yes	No	No	No

As nouns, wool is a hypernym of cashmere; that is, wool is a word with a broader meaning than cashmere:

cashmere: the wool of the Kashmir goat
wool: fiber sheared from animals (such as sheep) and twisted into yarn for weaving

cashmere (noun)	wool (noun)
a soft fabric made from the wool of the Cashmere goat	outer coat of especially sheep and yaks
the wool of the Kashmir goat	a fabric made from the hair of sheep
	fiber sheared from animals (such as sheep) and twisted into yarn for weaving