Differences between sweet beans and green beans

Leaf difference: the sweet bean leaves are oblong or oval; the fourth quarter bean leaves are opposite single leaves, broad oval or rhomboid. Flower difference: sweet beans are solitary or arranged in racemes with white or purplish red flowers; kidney beans are racemes with flowers at the top of the total pedicel. Fruit difference: Sweet pods are long and oval, and they are strip or slightly curved in four seasons.