Australian spelling vs economise

Australian spelling is a noun but economise is not a noun.

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

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

Australian spelling (verb)	economise (verb)
	use cautiously and frugally
	spend sparingly, avoid the waste of