Australian spelling vs systematisation

Australian spelling and systematisation both are nouns.

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

Australian spelling (noun)	systematisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	systematic organization; the act of organizing something according to a system or a rationale