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".
Accept Fangorn for Treebeard, Curunir for Saruman, Meriadoc for Merry, Peregrin for Pippin, Mithrandir for Gandalf. Also Uruk-Hai are not confirmed to be hybrids. If there was a hybrid race it would be the Peredhel, children of Men and Elves.
Galadriel wasn't the queen of the Elves and "Barad-Dur", "Orthanc", "Uruk-hai", "Balrog" and "Men" aren't characters.