Peanuts (scientifically known as Arachis hypogaea) are legumes that are often categorized as nuts due to their similar taste and texture. They are one of the most widely consumed legumes in the world, used in a variety of forms, such as raw, roasted, salted, and as peanut butter. Although peanuts grow underground, they share many of the same nutritional benefits as tree nuts like almonds and cashews.