British spelling vs fictionalise

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

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

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

British spelling (verb)	fictionalise (verb)
	convert into the form or the style of a novel
	make into fiction