First of all, yam and yam are different in shape. Yam is usually slender and cylindrical, while yam is thick and short.

Secondly, their colors are also different. The epidermis of yam is light yellow or light brown, while that of yam is dark brown.

In addition, their taste is also different. Yam tastes delicate, while yam tastes rough.

Finally, their nutritional values are different. Yam is rich in various nutrients, such as starch, protein, fat and vitamins.