Australian spelling vs dinner theatre

Australian spelling and dinner theatre both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
dinner theatre	Yes	No	No	No

Australian spelling (noun)	dinner theatre (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	a theater at which dinner is included in the price of admission