complementary vs spectral color

complementary and spectral color both are nouns.

Word	Noun	Adjective	Verb	Adverb
complementary	Yes	Yes	No	No
spectral color	Yes	No	No	No

As nouns, spectral color is a hypernym of complementary; that is, spectral color is a word with a broader meaning than complementary:

complementary: either one of two chromatic colors that when mixed together give white (in the case of lights) or grey (in the case of pigments)
spectral color: a color that has hue

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

complementary (noun)	spectral color (noun)
either one of two chromatic colors that when mixed together give white (in the case of lights) or grey (in the case of pigments)	a color that has hue

complementary (adjective)	spectral color (adjective)
acting as or providing a complement (something that completes the whole)
of words or propositions so related that each is the negation of the other