emphasise vs Australian spelling

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

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

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

emphasise (verb)	Australian spelling (verb)
to stress, single out as important
give extra weight to (a communication)