advertise vs Australian spelling

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

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

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

advertise (verb)	Australian spelling (verb)
make publicity for; try to sell (a product)
call attention to