itemise vs British spelling

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

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

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

itemise (verb)	British spelling (verb)
specify individually
place on a list of items