equalisation vs British spelling

equalisation and British spelling both are nouns.

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

equalisation (noun)	British spelling (noun)
the act of making equal or uniform	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')