currency

noun
UK /ˈkʌrənsi/
US /ˈkɜːrənsi/

Money that people use to buy things in a country.

I changed my dollars into the local currency before my trip.


OTHER MEANINGS

2. The state of being widely accepted or used.

That idea gained currency among young scientists.

3. The time during which something is valid or in use.

The old rule had a short currency.

4. General acceptance or circulation of a word or phrase.

The slang term quickly achieved currency online.