There are obvious differences in color and appearance between green and red peppercorns. Green peppercorns are green in color and have compact, oval-shaped fruits with short spines on the surface. Red peppercorns, on the other hand, are red in color and have larger, round fruits with sharp thorns on the surface. In terms of taste, green peppercorns have a strong numbing taste and a special aroma, which is stronger than that of ordinary red peppercorns.