Originally Posted by MigueldaRican
That might have been another change then. I think in the Hobbit movie, they were called Orcs. By looks that's what they seemed as well. I think back and vaguely remember I was confused about the difference between orc and goblin. The movies seemed to have define them differently. The goblins were short, hunched, jumpy creatures that reminds one more of monkeys, and dwelt mostly in the caves. The orcs are the next step, walk upright, originally Elves who were "tortured and mutilated" (as indicated by Saruman) into a new race.
Goblin is just another word for orc, it doesn't imply in any way small orc (kinda like goblin < orc < uruk or something like that). Goblin doesn't sound as nasty as orc so that's why Tolkien probably chose it for a novel more suited to children than his second novel.