1, different taste: buckwheat head is the fruit of buckwheat plants, there is a crisp texture, similar to nuts, with a certain sweetness. Buckwheat head can be eaten raw or cooked, used to make buckwheat porridge, pasta and so on. Onion head is the underground part of the onion plant, has a pungent flavor, has a certain spicy taste, and is used as a seasoning and vegetable.

2, the color is different: buckwheat head is white in color, smooth appearance, will be with yellowish spots. The color of green onion, there is a certain brightness, the appearance of a layer of dry outer skin.

3, different shapes: buckwheat head is round or oval shape, more rounded appearance, the size of about a small bean. Onion head is the underground part of the onion plant, cylindrical in shape, more slender in appearance, length and diameter will vary.