British spelling vs maximising

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

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

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

British spelling (adjective)	maximising (adjective)
	making as great as possible