Barleys are a type of cereal crop commonly grown around the world for both human consumption and for use as animal feed. There are several synonyms for this word, including grain, cereal, malt, and corn. Grain refers to any type of small, hard seed harvested for food, while cereal typically refers to the types of grains used to make breakfast cereals, like oats and wheat. Malt specifically refers to the sprouted barley seed used in brewing beer and making whiskey. Corn, on the other hand, is a term used mainly in the United States to refer to any type of grain, but is often associated with maize.