British spelling vs keratinise

British spelling is a noun but keratinise is not a noun.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
keratinise	No	No	Yes	No

British spelling (noun)	keratinise (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

British spelling (verb)	keratinise (verb)
	become horny and impregnated with keratin
	convert into keratin