@hunter5024: My limited understanding is that "goblin" is the English translation of the word "orc" that Tolkien mostly used in The Hobbit. So orcs and goblins are the same thing, I think. But some adaptions have shown orcs and goblins as being different but related things. Goblins are usually the small and agile ones, while orcs are the big, heavy, tough ones. And the Uruk-hai are orcs who were bred to be even bigger, heavier, and tougher than normal orcs. Again, very limited understanding. Hopefully someone will correct me if I'm completely off here.