staple fibre vs British spelling

staple fibre and British spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
staple fibre	Yes	No	No	No
British spelling	Yes	No	No	No

staple fibre (noun)	British spelling (noun)
a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')