orangeness vs chromatic colour

orangeness and chromatic colour both are nouns.

Word	Noun	Adjective	Verb	Adverb
orangeness	Yes	No	No	No
chromatic colour	Yes	No	No	No

As nouns, chromatic colour is a hypernym of orangeness; that is, chromatic colour is a word with a broader meaning than orangeness:

orangeness: orange color or pigment; any of a range of colors between red and yellow
chromatic colour: a color that has hue

Other hypernyms of orangeness include chromatic color, spectral color, spectral colour.

orangeness (noun)	chromatic colour (noun)
orange color or pigment; any of a range of colors between red and yellow	a color that has hue