home theatre vs British spelling

home theatre and British spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
home theatre	Yes	No	No	No
British spelling	Yes	No	No	No

home theatre (noun)	British spelling (noun)
television and video equipment designed to reproduce in the home the experience of being in a movie theater	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')