Call them beans, pulses, or legumes, they are members of a huge category of vegetables as there are more than 13,000 species found in the world. Many of you already know what are beans and their appearance. But beans is such a general word to use for there are many different types of beans available all over the world. These beans are a good source of protein, iron, magnesium, potassium, fiber, complex carbohydrate, and are low in fat content as well.