What are "grains"?

Grain refers to small, hard seeds harvested from cereal plants, such as wheat, rice, corn, oats, or barley, that serve as a vital food source for humans and animals. These seeds are rich in carbohydrates, providing energy, and often contain essential nutrients like vitamins, minerals, and fiber. Grains are used to make a wide variety of foods, including bread, pasta, cereal, and animal feed, making them a staple in diets worldwide.