British spelling vs linearise

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

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

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

British spelling (verb)	linearise (verb)
	make linear or get into a linear form