currency
(お金が)流れている状態→貨幣の流通
https://gyazo.com/062684467c83f35b6c10d118ea5e17db
noun (plural currencies)
1. a system of money in general use in a particular country:
e.g. the dollar was a strong currency
e.g. travelers checks in foreign currency
e.g. figurative : he was rich in the currency of love.
2. the fact or quality of being generally accepted or in use:
e.g. the term gained currency during the second half of the 20th century.
the time during which something is in use or operation:
e.g. no claim had been made during the currency of the policy.