"First age" is a term that is commonly used to describe a particular period in history or mythology. It generally refers to the earliest era during which important events or developments occurred, and is often associated with stories and legends of the creation of the world or the emergence of great civilizations. There are a number of synonyms that can be used to describe this concept, depending on context and location. Some of these include "primordial age," "mythical era," "ancient times," "prehistory," and "long ago." Each of these terms has its own nuances and implications, but all can be used to evoke the sense of beginning and origin that is so often associated with the first age.