Please if you come in contact with one of these creatures please do not tease them or mention words like "Quad", "Minty's Super Dome" or "Kenny Miller" as this will be sure to rage the beasts and result in your untimely end...
In Tolkien's works, smaller Orcs are sometimes referred to specifically as "Goblins," so in this sense one may consider an Orc to be a larger and more brutish type of Goblin, however outside of Tolkien's works this is rarely true, and Orcs are often made out to be a distinct race from Goblins, although in the Warhammer setting Orcs and Goblins are related races, part of a larger family of races known as "Greenskins."
Orcs are almost always savage and/or warlike, and are usually made out to be evil, unintelligent and pitiful monsters, and are often a creature simply used for "slaying fodder" for quests. However in the Warhammer settings Orcs or "Orks" are playable armies, and there is a sense of whimsy and glorified stupidity about them.
The Warcraft setting they are also playable; and their bloodlust and depravity came from being controlled by a demon curse which they have freed themselves from, and now have a sense of honour. In some other settings they are also from time-to-time given this "noble savage" image.
"Well don't just stand there, slay them all!"
2. In the 1st and 2nd edition D&D game, a race of warlike humanoids with porcine snouts who are closely related to humans and can interbreed with them.
3. In J. R. R. Tolkien's Middle-Earth, a race of creatures that were once elves, but have been corrupted by the dark powers of Morgoth and serve Sauron and Sauroman during the war of the ring. They were, in a sense, Tolkien's critique of industrial warfare. Also known as "goblins".