British spelling vs minimisation

British spelling and minimisation both are nouns.

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

British spelling (noun)	minimisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the act of reducing something to the least possible amount or degree or position