Roots:
* Carrots: The root itself is the edible part.
* Beets: The root is the edible part.
* Radishes: The root is the edible part.
* Turnips: The root is the edible part.
* Potatoes: The tuber (a swollen underground stem) is the edible part.
Stems:
* Asparagus: The edible part is the young shoot, which is actually a stem.
* Celery: The edible part is the stalk, which is a stem.
* Rhubarb: The edible part is the stalk.
Leaves:
* Lettuce: The leaves are the edible part.
* Spinach: The leaves are the edible part.
* Kale: The leaves are the edible part.
* Cabbage: The leaves are the edible part.
* Collard Greens: The leaves are the edible part.
Flowers:
* Broccoli: The edible part is the flower buds.
* Cauliflower: The edible part is the flower buds.
* Artichoke: The edible part is the flower bud.
Fruits:
* Tomatoes: Technically a fruit, but often considered a vegetable.
* Peppers: Technically a fruit, but often considered a vegetable.
* Cucumbers: Technically a fruit, but often considered a vegetable.
* Eggplant: Technically a fruit, but often considered a vegetable.
Seeds:
* Green beans: The edible part is the pod, which contains the seeds.
* Peas: The edible part is the seeds.
* Corn: The edible part is the kernels, which are the seeds.
This is just a sampling of common vegetables. There are many other examples!