mercerise vs British spelling

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

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

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

mercerise (verb)	British spelling (verb)
treat to strengthen and improve the luster