subvocalise vs Australian spelling

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

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

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

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