illegalise vs Australian spelling

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

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

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

illegalise (verb)	Australian spelling (verb)
declare illegal; outlaw