Australian spelling vs centralisation

Australian spelling and centralisation both are nouns.

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

Australian spelling (noun)	centralisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the act of consolidating power under a central control
	gathering to a center