British spelling vs centralisation

British spelling and centralisation both are nouns.

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

British spelling (noun)	centralisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the act of consolidating power under a central control
	gathering to a center