euthanise vs Australian spelling

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

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

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

euthanise (verb)	Australian spelling (verb)
intentionally cause the painless death of a person or animal