animal fibre vs British spelling

animal fibre and British spelling both are nouns.

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

animal fibre (noun)	British spelling (noun)
fiber derived from animals	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')