characterisation vs British spelling

characterisation and British spelling both are nouns.

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

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