Australian spelling vs destabilisation

Australian spelling and destabilisation both are nouns.

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

Australian spelling (noun)	destabilisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the action of destabilizing; making something less stable (especially of a government or country or economy)