British spelling vs characterisation

British spelling and characterisation both are nouns.

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

British spelling (noun)	characterisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	a graphic or vivid verbal description
	the act of describing distinctive characteristics or essential features