British spelling vs desensitisation

British spelling and desensitisation both are nouns.

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

British spelling (noun)	desensitisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the process of reducing sensitivity