1. Different properties:

Wheat flour: It is a powder directly ground into wheat or other grains after peeling.

Starch: It is a polysaccharide obtained by separating proteins and other substances from flour. It is insoluble in cold water and will absorb water and swell in hot water to become a viscous translucent colloidal solution.

2. Different ingredients:

Wheat flour: rich in protein, fat, carbohydrates and dietary fiber, with a sweet and cool taste. Made from ground wheat. ?

Starch: It is a part of flour. The main components are more than 80% carbohydrates and more than ten percent moisture. It is extracted from peas or potatoes.

3. Different cooking methods:

Wheat flour: mainly used for making steamed buns and frying (fried dough sticks, tenderloin, KFC fried wings, etc.). ?

Starch: Generally used to make soup, soup made with starch, such as seaweed and egg drop soup. It is clear and sticky, with good taste and visual appearance.

Baidu Encyclopedia-Wheat Flour

Baidu Encyclopedia-Starch