かへい貨幣kahei
1.

A medium accepted for transactions and a standard for determining prices, established by a government or central bank, which comes in the form of tangible pieces, either metallic coins or paper notes, used for financial exchanges.

2.

An instrument of trade that represents the exchange value of goods and services, serving as both a means for purchasing and a way to store value over time, evolving from historical items like shells and textiles to modern coins and banknotes.

3.

The system that facilitates the exchange of goods by serving as a common measure of value, enabling individuals to engage in trade effectively and enabling the comparison of worth among different items.

Example:

この代用貨幣では、会社の直営店に行き、その店で食料品や衣料を買うことしかできませんでした。

かへいかち貨幣価値kaheikachi
1.

The measure of what goods and services can be obtained in exchange for a specific unit of money, reflecting its purchasing power.

2.

The significance of a unit of currency in terms of its ability to facilitate transactions and represent worth in an economic context.

3.

The economic utility of money determined by the amount of commodities or services it can procure in the marketplace.

Example:

国民総生産は一定の期間における一国の財及びサービスを貨幣価値で計った総生産高である。