territorialisation vs British spelling

territorialisation and British spelling both are nouns.

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

territorialisation (noun)	British spelling (noun)
the act of organizing as a territory	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')