sanitisation vs British spelling

sanitisation and British spelling both are nouns.

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

sanitisation (noun)	British spelling (noun)
making something sanitary (free of germs) as by sterilizing	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')