compartmentalise vs British spelling

compartmentalise is not a noun while British spelling is a noun.

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

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

compartmentalise (verb)	British spelling (verb)
separate into isolated compartments or categories