currency

US /ˈkɝː.ən.si/
UK /ˈkɝː.ən.si/
"currency" picture
1.

monnaie

a system of money in general use in a particular country

:
The local currency is the Euro.
La monnaie locale est l'Euro.
What is the currency of Japan?
Quelle est la monnaie du Japon ?
2.

popularité, pertinence, actualité

the fact or quality of being generally accepted or in use

:
The idea gained currency among young people.
L'idée a gagné en popularité auprès des jeunes.
The theory has lost its currency in modern science.
La théorie a perdu sa pertinence dans la science moderne.