systematise vs Australian spelling

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

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

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

systematise (verb)	Australian spelling (verb)
arrange according to a system or reduce to a system