noun

The word "period" can have several meanings, but generally, it refers to a length of time or a specific point in time. It can also mean a punctuation mark (.) used to end sentences.

Example

1. The period of time between the dinosaurs and humans is called the Cenozoic Era.
2. The period of time when you are a student is called your school years.
3. The period of time when you are a baby is called your infancy.