Removed this because it's simply not true:

The proper term for an animated corpse is "ghoul", or if under the sway of a master, "revenant".

I'm not sure where the person who wrote that got those definitions. A ghoul is someone or something that eats corpses, robs graves, or enjoys morbid things. A revenant is someone who has returned from death or a long abscence. Look it up in a dictionary if you don't believe me. (Seriously, look it up before changing it back. They're real words with real definitions.)