When discussing the history of the Earth, the term "geological time period" is often used. However, there are other synonymous terms that can be used to describe various eras in Earth's history. For example, the term "epoch" can be used to describe smaller time periods within a geological time period. The term "age" is also sometimes used to describe a more specific timeframe within a geological epoch. Another synonym for geological time period is "era," which generally refers to longer time periods than an epoch. Lastly, the term "period" can be used to describe specific units of time within an era, and is often associated with notable events or changes in the Earth's history.