demythologise vs Australian spelling

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

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

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

demythologise (verb)	Australian spelling (verb)
remove the mythical element from (writings)