Ersatz is a German word literally meaning substitute or replacement. Although ersatz is used as an adjective in English, Ersatz can function in German only as a noun on its own, or as a part in compound nouns such as Ersatzteile (spare parts) or Ersatzspieler (substitute player). While the English term often implies that the substitution is of unsatisfactory or inferior quality, this connotation does not necessarily exist in the German context.