demythologisation vs Australian spelling

demythologisation and Australian spelling both are nouns.

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

demythologisation (noun)	Australian spelling (noun)
the restatement of a message (as a religious one) in rational terms	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')