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, everything in this world needs money to survive of our daily needs. The currency helps us to buy our foods, paying bills and other expenses we need. There are more currency in this world all of this currency is helping us in our daily lives.
Currency refers to money we used for exchange. Every country has a different currency, and the most known and used currency in the world is the US$. Just like in crypto currency, there are different currency, and the bitcoin is the most used and known of them all. The currency has many used, it used for buying/trading, and investments.