staple fibre vs natural fibre

staple fibre and natural fibre both are nouns.

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

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

staple fibre: 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 fibre include natural fiber.

staple fibre (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