terrorisation vs Australian spelling

terrorisation and Australian spelling both are nouns.

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

terrorisation (noun)	Australian spelling (noun)
the act of inspiring with fear	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')
an act of terrorism