a : a thing that is fashioned by casting in a very mould or sort: which include (one) : a replica (as of the statue) in metallic or plaster : casting (two) : a fossil copy of the small print of a normal object by mineral infiltration b : an impact taken from an object having a liquid or plastic substance : mold They made a mask from a wax cast of her face.

off the depression scrap and junk imply throwing absent or breaking apart as worthless in existent kind.

discard implies the website allowing go or throwing absent of something that is becoming worthless or superfluous although generally not intrinsically valueless.