Australian spelling vs spectral colour

Australian spelling and spectral colour both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
spectral colour	Yes	No	No	No

Australian spelling (noun)	spectral colour (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	a color that has hue