What does word epochs means in short way?

Answer 1

An epoch is a period in time. Describing some, usually, extended event or life but of no specific length.

For example you could say the epoch when the earth was forming, or the epoch of the renaissance.

Answer 2

In the context of machine learning, epochs refer to the number of times the entire training dataset is passed through the model. In simpler terms, it represents the number of iterations or cycles the model goes through to learn from the data.