medium of exchange vs monetary system

medium of exchange and monetary system both are nouns.

Word	Noun	Adjective	Verb	Adverb
medium of exchange	Yes	No	No	No
monetary system	Yes	No	No	No

As nouns, medium of exchange and monetary system are synonyms defined as:

medium of exchange and monetary system: anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region

medium of exchange (noun)	monetary system (noun)
anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region	anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region