Zea mays
Corn is the name that we use here in the United States, as well as in Canada and Australia, for the grain maize. In England, as well as most of the English-speaking world, the term "corn" is a generic term for cereal crops, such as wheat, barley, oats, rye, and, of course, maize.
In Native American lore, maize (or corn as it is commonly called in the U.S.) was one of the "three sisters." Corn seed, along with beans and squash, were planted and grown together, supporting each other in their life cycle and providing a very balanced diet of carbohydrates, proteins, and vegetable fats to their cultivators.