good humour vs Australian spelling

good humour and Australian spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
good humour	Yes	No	No	No
Australian spelling	Yes	No	No	No

good humour (noun)	Australian spelling (noun)
a cheerful and agreeable mood	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')