How produce is categorized changes between botanists and consumers.Fruit and vegetables can often be mislabeled.INSIDER found out which produce we call fruit are really vegetables, and which vegetables are really fruit.How produce is categorized differs between botanists and consumers, which is why some common fruits and vegetables are often mislabeled. From a botanical standpoint, "fruit" refers to anything that develops from the ovary of a flowering plant, while "vegetable" in turn applies to all other parts of a plant. INSIDER learned about 10 things we call fruit that are technically veggiesand vice versa.Rhubarb tastes fruity but is a perennial vegetable.Known for its fruity taste, rhubarb is a popular dessert ingredient. In fact, its usage in sweet dishes such as rhubarb pie prompted a 1947 court case in which it was ruled that rhubarb counts as a fruit. Despite what the legal system might say, it is, in fact, a perennial vegetable. Only the plant's stems, or stalks, are edible. Its roots and leaves contain oxalic acid, a substance that is toxic to the kidneys. Parts of the grapevine plant are eaten as a leafy vegetable.There's no debate about whether grapes count as a fruit. However, parts of the grapevine plant can be eaten as a leafy vegetable. In some culinary traditions, such as Greek and Persian, grape leaves stuffed with seasoned rice, and/or meat, are a popular dish. Avocados are giant berries.There's no ignoring the cultural sway of the avocadobut you might be surprised to learn that it's actually a fruit. To be precise, it's a single-seeded, oversized berry.See the rest of the story at Business Insider Click here to read full news..