Fruits vs Vegetables vs Flowers

In an article in Roots and Sprouts (the Belmont MA farmers' market newsletter) Claire Mackevicius states that "While 'fruit' is a 'botanical term,' 'vegetable' is a 'culinary term' that refers to many different types of produce." Isn't that an excellent distinction?

Claire does not mention flowers, but I think of artichokes (see last post), broccoli, nasturtium flowers.