Australian spelling vs itemisation

Australian spelling and itemisation both are nouns.

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

Australian spelling (noun)	itemisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the act of making a list of items