British spelling vs relativisation

British spelling and relativisation both are nouns.

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

British spelling (noun)	relativisation (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the act or result of making relative or regarding as relative rather than absolute.