Australian spelling vs tyrannise

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

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

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

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