deputise vs Australian spelling

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

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

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

deputise (verb)	Australian spelling (verb)
appoint as a substitute
act as a substitute