Pepper plants are an assortment of plants in the Capsicum genus which produce colorful fruits which are typically spicy. The peppers themselves are usually small, long, and either red, green, or yellow, but some are a medium size and/or roundish. While they are the fruits of the pepper plants and may externally appear to be culinary fruits, no pepper is used as a fruit. They are typically used for their spiciness, either cut up as a vegetable or ground up as a spice.
While a few cultivars are not spicy, they still have a grassy, slightly bitter flavor. Even so-called “sweet peppers” are not sweet and would not be eaten raw like a fruit. Even though they are botanically berries, peppers are not berries—or any kind of fruit—culinarily. They are usually vegetables.