familiarise vs Australian spelling

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

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

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

familiarise (verb)	Australian spelling (verb)
make familiar or conversant with