Hypernyms (currency is a kind of...): medium of exchange; monetary system (anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region). Hyponyms (each of the following is a kind of currency):money (the official currency issued by a government or national bank). Eurocurrency (currency of the major financial and industrial countries held in those countries for the purpose of lending and borrowing).edium of exchange; monetary system (anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region). Hyponyms (each of the following is a kind of currency):
Polyurethane combines the best properties of rubber and plastic, without the weaknesses inherent in plasticized vinyl films. Because it contains no plasticizers, it is not subject to the brittleness and other problems caused when they leach to the surface.
Polyurethane can be oil-or water-based, and you can use either kind over latex paint; however, oil-based polyurethane tends to yellow as it ages, whereas water-based varieties stay transparent.olyurethane is a clear varnish that dries to a hard, solid finish. It protects your wooden surfaces from scratches and prevents paint from peeling, and it's easy to clean. These qualities make it ideal for finishing tabletops, bartops, cabinets and other indoor surfaces.