British spelling vs regularise

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

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

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

British spelling (verb)	regularise (verb)
	make regular or more regular
	bring into conformity with rules or principles or usage; impose regulations