criticise vs Australian spelling

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

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

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

criticise (verb)	Australian spelling (verb)
find fault with; express criticism of; point out real or perceived flaws
act as a critic