urbanisation vs British spelling

urbanisation and British spelling both are nouns.

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

urbanisation (noun)	British spelling (noun)
the social process whereby cities grow and societies become more urban	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')
the condition of being urbanized