What's the difference between a fruit and a vegetable?
A plant scientist will most likely explain that a "FRUIT" is the part of the plant that develops after an egg is fertilized and then grows into a fleshy container for seeds.
So, to answer the question "IS IT A FRUIT OR VEGETABLE,"
you need to ask is, "DOES IT HAVE SEEDS?"
If the answer is yes, then technically, you have a FRUIT. Apples. oranges and watermelon are fruits because they hold the seeds which the plant makes to grow into new plants someday. The little black dots on strawberries are also seeds which makes strawberries a fruit.
Things like radishes, celery, carrots, and lettuce do NOT have seeds so they are called vegetables. Vegetables are any part of the plant that doesn't have a part in making the seeds that make new plants.
If you are paying attention, you will realize that because of its seeds, a tomato is a fruit, too. Cucumbers, squash, green beans and walnuts all have seeds so they are also fruit.