Australian spelling vs subvocalise

Australian spelling is a noun but subvocalise is not a noun.

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

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

Australian spelling (verb)	subvocalise (verb)
	articulate without making audible sounds