British spelling vs capitalise

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

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

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

British spelling (verb)	capitalise (verb)
	convert (a company's reserve funds) into capital
	consider expenditures as capital assets rather than expenses
	compute the present value of a business or an income
	write in capital letters
	draw advantages from
	supply with capital, as of a business by using a combination of capital used by investors and debt capital provided by lenders