Orcs
Orcs are large creatures with long arms and short legs, huge slabs of muscle move under tough green skin, and their jaws are lined with vicious fangs that jut out from their underbite. They have beady red eyes, a generally foul demeanor, and are naturally bald. Normally six feet tall, they are up to seven feet tall when stretched out of their characteristic stoop. They respect power and strength, and naturally tend towards becoming bigger and stronger as they rise through their society. While they lack the education of more advanced races, Orcs possess immense cunning and are quick learners, but rarely adopt new tactics to replace their fondness for close quarters brutality.
Black Orcs were originally created by the Chaos Dwarves to use as slaves, but have since rebelled and found a place in regular Orc armies. They are even bigger, stronger and meaner than regular Orcs, and so tend towards command roles. They are not above forming their own units though. Though other Orcs tend to look down on Black Orc intelligence, Black Orcs are, if not smarter, at the very least more well-organized. They are above the petty infighting (called Animosity in-game) that happens in most tribes and settle their differences with other Greenskins with orderly head-butting contests. Being the largest of Orcs and having an air of authority, Black Orcs confiscate large amounts of the heaviest armour from the camp and march to battle carrying a variety of weapons.
Savage Orcs are a different culture of orcs; their tribes have a stone-age level of development, and are even more shamanistic and savage than their regular Orc cousins. They are most well known for riding giant boars into combat, and paint their bodies with magical tribal designs which provide them with some level of supernatural protection. In game, this gives them a 6+ Ward saving throw on a six sided dice.
Read more about this topic: Orcs And Goblins (Warhammer)