devitalisation vs British spelling

devitalisation and British spelling both are nouns.

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

devitalisation (noun)	British spelling (noun)
the act of reducing the vitality of something	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')