Australian spelling vs immortalise

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

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

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

Australian spelling (verb)	immortalise (verb)
	make famous forever
	be or provide a memorial to a person or an event