British spelling vs circularisation

British spelling and circularisation both are nouns.

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

British spelling (noun)	circularisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	circulating printed notices as a means of advertising