Carol (Nichols || Goulding)

Can we just rewrite our texts to only ever refer to the “age if stability” (2015 epoch) and the “age of productivity” (2018 epoch)?

Neither? Epoch sounds ancient. Era makes me think of "earned run average" from baseball, and commercials that say things like "a new era of shaving technology"

An epoch is a reference time stamp used to define an era which is an interval or duration.

i can't answer this question because it appears to presume these words mean the same thing, which they don't.

aeon https://en.wikipedia.org/wiki/Aeon 

What about æon?

depends how you pronounce epoch (or era for that matter)