British spelling vs cubic kilometre

British spelling and cubic kilometre both are nouns.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
cubic kilometre	Yes	No	No	No

British spelling (noun)	cubic kilometre (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	a unit of capacity equal to the volume of a cube one kilometer on each edge