standard, monetary standard

the value behind the money in a monetary system

• gold standard — a monetary standard under which the basic unit of currency is defined by a stated quantity of gold
• silver standard — a monetary standard under which the basic unit of currency is defined by a stated quantity of silver
• bimetallism — a monetary standard under which the basic unit of currency is defined by stated amounts of two metals (usually gold and silver) with values set at a predetermined ratio

• value — the quality (positive or negative) that renders something desirable or valuable