demagnetisation vs Australian spelling

demagnetisation and Australian spelling both are nouns.

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

demagnetisation (noun)	Australian spelling (noun)
the process of removing magnetization	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')