systematisation vs British spelling

systematisation and British spelling both are nouns.

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

systematisation (noun)	British spelling (noun)
systematic organization; the act of organizing something according to a system or a rationale	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')