Grains are the seeds of grasses and include wheat, corn, oats, and rice. Beans are seeds of legumes and include peas, lentils, soybeans, and chickpeas. Nuts are the seeds of trees and include chestnuts, hazelnuts, and acorns. Drupes are a type of fruit where a fleshy layer surrounds a shell, and inside the shell is a seed. Drupes that we don't normally eat the seed include peaches, plums, mangos, and coconut, while drupes that we do eat the seed include walnuts, almonds, and pecans. Traditional seeds include sesame, poppy, and sunflower seeds.