British spelling vs square metre

British spelling and square metre both are nouns.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
square metre	Yes	No	No	No

British spelling (noun)	square metre (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	a unit of measurement for area, defined as the area of a square with sides of exactly 1 metre; a centiare is 1/100th of an are