dehumanisation vs British spelling

dehumanisation and British spelling both are nouns.

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

dehumanisation (noun)	British spelling (noun)
the act of degrading people with respect to their best qualities	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')