schematisation vs British spelling

schematisation and British spelling both are nouns.

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

schematisation (noun)	British spelling (noun)
providing a chart or outline of a system	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')
the act of reducing to a scheme or formula