minimisation vs British spelling

minimisation and British spelling both are nouns.

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

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