British spelling vs professional organisation

British spelling and professional organisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
professional organisation	Yes	No	No	No

British spelling (noun)	professional organisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	an organization of and for professional people