You searched for: “eras
era (s) (noun), eras (pl)
1. A period of time that is marked by distinctive character or reckoned from a fixed point or event: "Summer camp is not quite the same in this era of tornados."
2. A segment of time which is characterized by particular circumstances, events, or people: "Some examples of eras include, 'The Colonial era of U.S. history'; 'The Clinton era'; and 'The economic depression era'."