The Vietnamese word "ngũ cốc" refers to cereals or grain foodstuffs. It is a general term used to describe various types of grains that are often used in cooking or as ingredients in different meals. These grains can include rice, wheat, corn, oats, barley, and more.
In summary, "ngũ cốc" is a versatile word in Vietnamese that encompasses a wide range of cereals and grains. It is commonly used in discussions about nutrition, cooking, and dietary choices.