cereal
(a grain used for food, such as wheat, rice, oats, or corn)
- Wheat and rice are the two most important cereal crops.
(a food made from this grain eaten with milk in the morning)
- I have a large bowlful of cereal for breakfast every morning.
serial
(a story that is broadcast in several separate parts)
- A new serial is starting on television at 8:30 tonight.
(happening or arranged in a series)
- It passes information in serial form.
- Keep the pictures in the same serial order.