And many of the Gondorians -- particularly those around Minas Tirith -- spoke
Sindarin (Elvish) in everyday language, as well as Westron, just as the
Rohirrim spoke both Rohirric and
Westron.
“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.)