systematise vs British spelling

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

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

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

systematise (verb)	British spelling (verb)
arrange according to a system or reduce to a system