Original: The result may be a decorated object in itself, as when silver, gold, steel, or glass are engraved, or may provide an intaglio printing plate, of copper or another metal, for printing images on paper as prints or illustrations; these images are also called engravings.
Simplified: The result may be a decorative piece in itself, as when silver, gold or steel are engraved, or may provide a printing plate of copper or another metal, for printing images on paper which are also called engravings.