terrorisation vs British spelling

terrorisation and British spelling both are nouns.

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

terrorisation (noun)	British spelling (noun)
the act of inspiring with fear	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')
an act of terrorism