3. Forex rate:
In finance, the exchange rates (also known as the foreign-exchange rate, forex rate or FX rate) between two currencies specify how much one currency is worth in terms of the other. It is the value of a foreign nation’s currency in terms of the home nation’s currency.
For example an exchange rate of 91 Japanese Yen (JPY, ¥) to the United States Dollar (USD, $) means that JPY 91 is worth the same as USD 1. The foreign exchange market is one of the largest markets in the world. By some estimates, about 3.2 trillion USD worth of currency changes hands every day.