MEDIUM n.
d and prepared for application. Circulating medium, a current medium of exchange, whether coin, bank notes, or government notes. -- Ethereal medium (Physics), the ether. -- Medium of exchange, that which is used for effecting an exchange of commodities -- money or current representatives of money.
MONEY n. 3 definitions
A piece of metal, as gold, silver, copper, etc., coined, or stamped, and issued by the sovereign authority as a medium of exchange in financial transactions between citizens and with government; also, any number of such pieces; coin. To prevent such abuses, ... it has been found necessary ... to affix a public stamp up…