alizarine red vs redness

alizarine red and redness both are nouns.

Word	Noun	Adjective	Verb	Adverb
alizarine red	Yes	No	No	No
redness	Yes	No	No	No

As nouns, redness is a hypernym of alizarine red; that is, redness is a word with a broader meaning than alizarine red:

alizarine red: a bright orange-red color produced in cotton cloth with alizarine dye
redness: red color or pigment; the chromatic color resembling the hue of blood

Other hypernyms of alizarine red include red.

alizarine red (noun)	redness (noun)
a bright orange-red color produced in cotton cloth with alizarine dye	red color or pigment; the chromatic color resembling the hue of blood
	a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat