regularise vs Australian spelling

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

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

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

regularise (verb)	Australian spelling (verb)
make regular or more regular
bring into conformity with rules or principles or usage; impose regulations