Australian spelling vs characterise

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

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

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

Australian spelling (verb)	characterise (verb)
	describe or portray the character or the qualities or peculiarities of
	be characteristic of