ionise vs British spelling

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

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

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

ionise (verb)	British spelling (verb)
convert into ions
become converted into ions