staple fiber vs natural fibre

staple fiber and natural fibre both are nouns.

Word	Noun	Adjective	Verb	Adverb
staple fiber	Yes	No	No	No
natural fibre	Yes	No	No	No

As nouns, natural fibre is a hypernym of staple fiber; that is, natural fibre is a word with a broader meaning than staple fiber:

staple fiber: a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn
natural fibre: fiber derived from plants or animals

Other hypernyms of staple fiber include natural fiber.

staple fiber (noun)	natural fibre (noun)
a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn	fiber derived from plants or animals