Normally, in reference to fruit, it is considered the part of the plant that contains the seeds. For this reason, food like tomatoes, peppers, zucchini, and squashes are technically looked at as fruits rather than veggies. Vegetables are usually considered the other parts of the plant that is used for food. This could be leaves, the roots, the stems, and even the flowers. Commonly known green leafy vegetables are lettuce and spinach. Popular root veggies include carrots, beets, potatoes, and sweet potatoes. Mostly stems would be found in veggies like asparagus, and flowers are normally found in veggies like broccoli and cauliflower.