chromatic colour vs Australian spelling

chromatic colour and Australian spelling both are nouns.

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

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