decriminalisation vs British spelling

decriminalisation and British spelling both are nouns.

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

decriminalisation (noun)	British spelling (noun)
legislation that makes something legal that was formerly illegal	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')