Corn is considered a vegetable, grain and fruit. Sweet corn is a vegetable because it is grown and produced for eating. Field corn is harvested dried and is a grain because it is a dried grass seed. Corn is a fruit because of the botanical definition of fruit.
Corn is known as maize in most places of the world. It is the highest produced crop worldwide. It is used in food production for both people and animals, and it makes up 21 percent of the world's nutrition. It is also used in the production of fuel, ink, medicine, clothes and cosmetics.