In a word, PAIN! A dead body is just that, dead. It is past feeling pain. A live body will feel terrible pain.
the living body will have a pulse, a dead one wont!
Disposal of the dead body by incineration (burning)
a dead body, esp. a human body to be dissected; corpse.
it pumps blood around the body. if the human heart stops it means your dead
Burning of dead is the custom of Hindus, that too mostly by Brahmins. It is called consigning the body to the fire god.
such a pile for burning a dead body, esp. as part of a funeral rite, as in India.
Flesh, figure, and anatomical frame can substitute for human body. If you are talking about a dead human body, you can use the word corpse.
pyre funeral pyre (Scheiterhaufen)
Corpse...
murder
Corpse, cadaver, human remains.
it will reduce the immunity