British spelling vs summarisation

British spelling and summarisation both are nouns.

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

British spelling (noun)	summarisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the act of preparing a summary (or an instance thereof); stating briefly and succinctly