What is Currency
Currency serves as a link between products or services exchange for cash. These days, we reckon currency only minted or paper money, and these days even paper bills are taken for currency, but sometimes it includes even coins.
The price that are offered to the trade of goods in a country are known as exchange rates, and these exchange rates are not set or fixed by the central bank of the country, they are known as the floating currency rates. Fixed currency is absolutely contrary to the floating currency and it is also known as pegged currency which is not used quite commonly, most of the time it is associated with the US Dollar and the Euro.
If some currency is permitted to use for the exchange of the goods or services in some country, a specific term legal tender is used for it that is the unit of the currency in this country such as in the United States, its USD is known as the legal tender of the country.
There were some other items which were used as a currency for trade before cash. For instance, members of the Native American nations often used cocoa beans for currency in trading clothing and other tools. Similarly, some goods that basically were of European origin were traded in some countries of Africa for gold dust. Some other ancient civilization used salt for the trade of goods.
The rates which are used to convert the currency units of one country to the other one are known as currency conversion rates. Most of these countries seem to use their legal tender to convert their currency into the currency units of other countries. These current exchange rates are also known as spot exchange rates.

