British spelling vs breathalyse

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

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

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

British spelling (verb)	breathalyse (verb)
	test someone's alcohol level in his blood by means of a breathalyzer