luciferin vs animal pigment

luciferin and animal pigment both are nouns.

Word	Noun	Adjective	Verb	Adverb
luciferin	Yes	No	No	No
animal pigment	Yes	No	No	No

As nouns, animal pigment is a hypernym of luciferin; that is, animal pigment is a word with a broader meaning than luciferin:

luciferin: pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing oxidation
animal pigment: pigment occurring in animals

luciferin (noun)	animal pigment (noun)
pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing oxidation	pigment occurring in animals