What two groups are cereals classified into?

Cereals are classified into two groups based on their grain type:

1. Grains: These are the most common type of cereal and include wheat, rice, and maize (corn).

2. Pseudo-grains: These are technically not grains, but they are often included in the cereal category due to their similar nutritional value and culinary uses. Examples include quinoa, buckwheat, and amaranth.