British spelling vs computerise

British spelling is a noun but computerise is not a noun.

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

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

British spelling (verb)	computerise (verb)
	control a function, process, or creation by a computer
	store in a computer
	provide with computers