disorganisation vs British spelling

disorganisation and British spelling both are nouns.

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

disorganisation (noun)	British spelling (noun)
the disturbance of a systematic arrangement causing disorder and confusion	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')
a condition in which an orderly system has been disrupted