Common bean + Green bean

Phaseolus vulgaris, the common bean, string bean, field bean, flageolet bean, French bean, garden bean, haricot bean, pop bean, or snap bean, is a herbaceous annual plant grown worldwide for its edible fruit, either the dry seed or the unripe fruit, both of which are referred to as beans. The leaf is also occasionally used as a vegetable, and the straw can be used for fodder. Along with other species of the bean genus (Phaseolus), it is classified botanically into the legume family (Fabaceae), most of whose members acquire nitrogen through an association with rhizobia, a species of nitrogen-fixing bacteria.

Green beans, also known as string beans, snap beans in the northeastern and western United States, or ejotes in Mexico, are the unripe fruit of various cultivars of the common bean (<i>Phaseolus vulgaris</i>). Green bean cultivars have been selected especially for the fleshiness, flavor, or sweetness of their pods. Haricots verts, French for "green beans", also known as French beans, French green beans, French filet beans, Fine beans (British English), is a variety of green bean that is longer, thinner, crisp, and tender. It is different from the haricot bean, which is a dry bean. (Wikipedia)