Corn, which is the world’s largest cereal crop in terms of global production, is a native grain of the Americas (with the United States being the world’s largest producer and exporter of corn, followed by Argentina). It can also be called maize and is part of the coarse grain family, which also includes barley, sorghum, oats and rye. Corn is used for livestock feed, human consumption and as a feedstock for ethanol production.