Australian spelling vs pluralise

Australian spelling is a noun but pluralise is not a noun.

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

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

Australian spelling (verb)	pluralise (verb)
	mark with a grammatical morpheme that indicates plural