gray alder; gray area; gray birch; gray catbird; gray flounder; gray fox; gray goldenrod; gray hen; gray jay; gray kingbird; gray lemming; gray market; gray matter; gray mullet; gray partridge; gray polypody; gray poplar; gray sage; gray sea eagle; gray skate; gray snapper; gray sole; gray substance; gray whale; gray willow; gray wolf; gray-black; gray-blue; gray-brown; gray-green; gray-haired; gray-headed; gray-pink; gray-white;