British spelling vs compartmentalisation

British spelling and compartmentalisation both are nouns.

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

British spelling (noun)	compartmentalisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the act of distributing things into classes or categories of the same type
	a mild state of dissociation