reorganisation vs British spelling

reorganisation and British spelling both are nouns.

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

reorganisation (noun)	British spelling (noun)
the imposition of a new organization; organizing differently (often involving extensive and drastic changes)	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')