There are many. The languages of Middle-Earth are as rife as blades of grass. In the Woodland Realm we speak Sindarin, as do the elves away south and far to the west over the Misty Mountains. Men have always invented a great many tongues and I have not studied Dwarvish runes in all my years. [ A pause. ] Of Orkish and the Black Speech, I will say no more than to name them thus.

[ Gently, he probes back by asking, ] What of your world, Miss Granger? It appears that here, at least, we all share the common speech.