Fruit, vegetable

Since “vegetable” is not a botanical term, there is no negation in referring to a plant part as a fruit while also being considered a vegetable (see diagram). Given this general rule of thumb, vegetables can also embrace leaves (lettuce), stems (asparagus), roots (carrots), flowers (broccoli), bulbs (garlic), seeds (peas and beans) and botanical fruits such as cucumbers, squash, pumpkins, and capsicums (bell peppers). Botanically, fruits are reproductive organs (ripened ovaries containing one or many seeds), while vegetables are vegetative organs which keep up the plant.

The question "is it a fruit, or is it a vegetable?" has even found its way into the United States Supreme Court, which ruled generally in Nix v. Hedden, 1893, that a tomato is a vegetable for the purposes of 1883 Tariff Act, even though botanically, a tomato is a fruit.
Commercial production of vegetables is a division of horticulture called olericulture