did have settlements all over the world, so Adunaic words might be found in far
Harad, but presumably not to the extent it influenced Westron, in Elendil's
kingdom. On the other hand, note that when the orcs looked for a common
language, they, too, spoke Westron, which was more successful even than
Sauron's own Black Speech. If even Sauron's orcs speak Westron, it is
possible his diverse human armies used it as a common language as
well.
“I dislike Allegory - the conscious and intentional allegory - yet any attempt to explain the purport of myth or fairytale must use allegorical language. (And, of course, the more 'life' a story has the more readily will it be susceptible of allegorical interpretations: while the better a deliberate allegory is made the more nearly will it be acceptable just as a story.)” (From Tolkien Letter # 131.)
