Hi everyone, my question comes more related into a ''realistic'' setting, in the sense that, let's say: You have a world with various races or lenguages, then, for the reader to better understand, do you give a general name that is widely used by every race, or do you have different names for every lenguage?

For example, in A Song of Ice and Fire, why is Essos called like that? It looks like the name is widely accepted in the known-world as the offical title, same goes for Westeros.

Thanks!