This is the 10122nd most frequent Spanish word.
cereal
A grain used for food, such as wheat, oats, or corn.
Here, the word 'cereal' is used as a food noun to denote a common breakfast item.
Hoy comí cereal con leche para el desayuno.
Today I ate cereal with milk for breakfast.
In this case, 'cereal' refers to grain crops such as wheat or corn, illustrating its use in agriculture.
Los granos de cereal se cultivan en grandes campos.
Cereal grains are grown in large fields.
Here, 'cereal' is used in a broader sense to refer to grain-based products in food production.