Medium of exchange and Valid currency

Medium of exchange noun - Anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region.

Valid currency and medium of exchange are semantically related In some cases you can use "Valid currency" instead a noun phrase "Medium of exchange".

Medium of exchange and valid currency are semantically related in money backed by government topic. You can use "Medium of exchange" instead a noun phrase "Valid currency".