pigment vs phycoerythrin

Other hyponyms of pigment include chlorophyl, chlorophyll, bacteriochlorophyll, phycobilin, phycocyanin, titania, titanic oxide, titanium dioxide, titanium oxide, cobalt blue, cobalt ultramarine, earth color, mosaic gold, stannic sulfide, carotenoid, animal pigment, cerulean blue, chrome green, Hooker's green, chrome yellow, bister, bistre, flavonoid, Indian red, ivory black, iron blue, Prussian blue, Payne's gray, Payne's grey, alizarin, alizarine, bole, lake, lake, orange, water-color, water-colour, watercolor, watercolour, retinal, retinene, Paris green, sepia, porphyrin, haem, haemitin, hematin, heme, protoheme, haemosiderin, hemosiderin, ultramarine, ultramarine blue, photopigment, cadmium yellow, cupric acetate, verdigris, ceruse, lead carbonate, white lead, Chinese white, zinc white.