tyrannise vs Australian spelling

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

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

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

tyrannise (verb)	Australian spelling (verb)
rule or exercise power over (somebody) in a cruel and autocratic manner
rule a country as a tyrant