Australian spelling vs externalisation

Australian spelling and externalisation both are nouns.

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

Australian spelling (noun)	externalisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	embodying in an outward form
	attributing to outside causes