"Starch and groundnut flour are not the same, starch is a general term for a large category which is mainly extracted from plant fruits, while groundnut flour is a type of starch, which is extracted from the inside of groundnuts. Groundnut starch is generally used as a snack, and coarse grains are preferred when buying it."

Potato starch is usually used to refer to a Han Chinese specialty snack, and you should be referring to sweet potato starch. Sweet potato starch is a kind of Dianzhi powder. Sweet potato starch is one of the main products of sweet potato processing, sweet potato starch can be divided into two kinds of processing by fresh sweet potato and dried sweet potato. But because the quality of fresh sweet potato starch is better than that of dried sweet potato starch, so the fresh sweet potato processed starch is more, due to the sweet potato cutting is more troublesome, now few people use dried sweet potato to process starch. Starch is a polymerization of glucose molecules, which is the most common form of carbohydrate storage in cells. Starch is also known as gravy powder in the food service industry. In addition to being eaten, starch is used industrially to make dextrin, maltose, glucose, alcohol, etc. It is also used to make printing paste, sizing of textiles, gluing of paper, and pressing of pharmaceutical tablets. It can be extracted from starch-containing substances such as corn, sweet potato, wild acorn and kudzu.