British spelling vs decentralisation

British spelling and decentralisation both are nouns.

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

British spelling (noun)	decentralisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the spread of power away from the center to local branches or governments