little theatre vs Australian spelling

little theatre and Australian spelling both are nouns.

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

little theatre (noun)	Australian spelling (noun)
a small theater for experimental drama or collegiate or community groups	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')