apostatise vs Australian spelling

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

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

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

apostatise (verb)	Australian spelling (verb)
abandon one's beliefs or allegiances