Zombie Films: Outbreak Zombies VS. Dead/Corpse Risen Zombies.

  It is important to note that there are 2 primary types of Zombie films. Dead/Corpse Risen and Outbreak.  Dead/Corpse Risen refers to the dead rising from the grave and recently deceased coming back to life or re-animating. Outbreak refers to a man-made virus being released into the public, causing mental incapacity of human beings and flesh-eating tendency's.  Outbreak zombies won't come back to life once killed, Where as Dead/Corpse Rising zombies will continue living until the brain cavity is destroyed.

 The easiest way to tell the difference between Dead/Corpse Rising and Outbreak is in the physical articulation.  Outbreak zombies are capable of moving as normal human beings. They run as fast as a normal human though they don't tire.  They keep going until they are killed or their food supply runs out and they starve. Once killed they don't get back up. Where as Dead/Corpse Risen zombies have been affected by rigor-mortise and their bodies have started to decay. This then falls under they stiffening of limbs and muscles making it very difficult to move quickly. In small numbers they are easy to avoid as they can't quickly change direction without losing balance and falling. They will live off of living flesh of any kind, but are best sustained by brains.