Undead

Undeath is the state of being that occurs when a body is forced to move without actually having to show any lifesigns, like a pulse or body heat.

Ghosts do not have a corporal body persec, but they still count as undead as they are forced to linger in this world and will attempt to hurt anyone that crosses their path.

Categories of undead
Undead usually comes in the variety of three:

Possessed, Puppeteered and Cursed.

Possessed is the art of necromancy where a necromancer forces a spirit into the body of a deceased person and bends it to his will.

Puppeteered is managing a dead body with magic strings without the use of a spirit.

Cursed is when a spirit suffers some sort of trauma and remains after death. Usually these lingers around the place where they died and is hardly any use to necromancers as tehy are hard to control.

How to recognize undead?
Undead comes in three different forms:

Skeletal (Quick, agile and bony.)

Fleshy (Slow, tough and smells.)

And

Ghostly (Hard to hit, can see right through and vurnerable to magic)

How to hunt undead?
The best way to hunt undead is by fire and holy magic. In the case of skeletals, blunt weaponry is considered practical.