British spelling vs catheterisation

British spelling and catheterisation both are nouns.

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

British spelling (noun)	catheterisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the operation of introducing a catheter into the body