zeaxanthin vs carotenoid

zeaxanthin and carotenoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
zeaxanthin	Yes	No	No	No
carotenoid	Yes	No	No	No

As nouns, carotenoid is a hypernym of zeaxanthin; that is, carotenoid is a word with a broader meaning than zeaxanthin:

zeaxanthin: yellow carotenoid (isomeric with lutein and occurs widely with it) that is the main pigment in yellow Indian corn
carotenoid: any of a class of highly unsaturated yellow to red pigments occurring in plants and animals

zeaxanthin (noun)	carotenoid (noun)
yellow carotenoid (isomeric with lutein and occurs widely with it) that is the main pigment in yellow Indian corn	any of a class of highly unsaturated yellow to red pigments occurring in plants and animals