Lynguistykon: Popular Language
Popular Language can refer to two interconnected concepts Somewhere Else. The Popular Language(s) of Somewhere Else are those languages used by large percentages of its people inhabitants, largely irrespective of their own origins and outside of the original heartlands of the language. Because of the vastness of Somewhere Else, throughout its history there has been more than one Popular Language and often more than one concurrently as well.
Popular Language in a broader sense can also refer to communication expressions that are held in common across languages and that get expressed by their speakers alongside those languages' own expressions. A language may have its own native way of expressing an idea, but there may be another way several different languages express the same idea too, and a speaker from that language may therefore use the way held in common across different languages rather than the one expressed natively in their own language. This is called Peoplespeak.