Corpse. When I die my mortal remains will be buried. Mortal = adjective. Remains = noun (that which remains behind when we die, that which is "left behind"). Sometimes we just use the word "remains" when talking about a corpse.

Don't confuse mortal with morsel either hehehe mortal means human not a god, morsel means little bit of food - "eat every morsel".

dead body

what's left of a person (mortal - not a god) when they die