legalisation vs British spelling

legalisation and British spelling both are nouns.

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

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