What do north Americans call the haricot?
The haricot (in French) is a bean. Haricot beans are small dry
white beans which are used in baked bean dishes, soups, and chili.
In America, one would buy Navy beans, white beans, "Boston" beans -
some markets may sell them as fagioli, which is an Italian name for
beans.
Haricot vert is "green bean." That's a completely different
food.