British spelling vs decolonisation

British spelling and decolonisation both are nouns.

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

British spelling (noun)	decolonisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the action of changing from colonial to independent status