The tower of Mordor is actually Minas Morgul; it's only Barad-dur in the movies. And Galadriel isn't exactly the Queen of the Elves, she is the Lady of Lothlorien, or Lorien.
Barad-Dur and Minas Morgul are different towers. Minas Morgul is on the mountainous border between Gondor and Mordor, while Barad-Dur is well within the borders of Mordor, closer to Orodrim.
It's actually steward, not stewart, and Treebeard is a tree herder, not a treehearder. Not sure Aragorn was actually exiled, could be wrong though. Also, love the Fool of a Took thing--I'm a big Pippin fan.
It's "Steward", not "Stewart". Galadriel is not referred to as a queen, but mostly as the "Lady of Light" or "The Lady of Lorien". The Uruk-hai were not hybrids, this is an insertion from the movies. Finally, it's "Treeherder", not "Treehearder".
Galadriel wasn't the queen of the Elves and "Barad-Dur", "Orthanc", "Uruk-hai", "Balrog" and "Men" aren't characters.