1. Different. Corn starch is made by impregnating corn with 0.3 sulfurous acid and then going through processes such as crushing, sieving, precipitation, drying, and grinding.

2. Potato starch is made from potatoes, including potato skins, which are cooked, dried and finely ground. Cornstarch is less sticky than potato starch. The gelatinization temperature of corn starch is higher than that of potato starch.