My first come to mind when we say currency is the money that spend on a whole day to survive , it is many kind of currency in all over the world, I think currency is the most helpful for our dailyneeds.
Yes i agree in your opinion. Yes there is different kind of currency all over the world. The currency that we need in our daily lives to survive cause we know all things in this world needs money that's why we need to work and earn money.