A peanut is a plant that grows pods containing seeds that are known as peanuts, you may think of peanuts as nuts, but they are actually legumes. Despite the deceptive name peanut, this plant is more closely related to peas than it is to almonds and hazelnuts. Peanuts are especially good source of healthful fats protein and fiber. They also contain plenty of potassium, phosphorous, magnesium and B vitamins. Despite being high in calories, peanuts are nutrient rich and low in carbohydrates.