destabilise vs Australian spelling

destabilise is not a noun while Australian spelling is a noun.

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

destabilise (noun)	Australian spelling (noun)
	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

destabilise (verb)	Australian spelling (verb)
make unstable
become unstable