a : a thing that is formed by casting in a very mold or kind: such as (1) : a replica (as of a statue) in steel or plaster : casting (two) : a fossil reproduction of the small print of the purely natural object by mineral infiltration b : an perception taken from an item using a liquid or plastic compound : mold They created a mask from the wax cast of her face.
from the depression scrap and junk imply throwing away or breaking apart as worthless in existent variety.
discard indicates the letting site go or throwing absent of something which is now worthless or superfluous however frequently not intrinsically valueless.