Rice, bread, corn, sesame. The bread in these four words is the food after grain processing. The other three all refer to food crops. So bread is different from the other three.

Bread: Food made by mixing flour and water, fermenting and baking.

Paddy: Unshelled rice seeds.

Corn: Also called corn. There are old corn, Hosta, Yumai, Baogu, Mi Bao, Bangzi and pearl rice in different areas.

Sesame: an important oil crop. The seeds of this plant can be eaten or pressed for oil. Also known as fat hemp.