keratinise vs Australian spelling

keratinise is not a noun while Australian spelling is a noun.

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

keratinise (noun)	Australian spelling (noun)
	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

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