Currency Trading Pairs

currency trading
In finance, the exchange rates (also known as the foreign-exchange rate, forex rate or FX rate) between two currencies specifies 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.
The act of exchanging the legal tender of one country for another.

pairs
A set of two things used together or regarded as a unit
form a pair or pairs; "The two old friends paired off"
(pair) couple: two items of the same kind
Two playing cards of the same denomination
An article or object consisting of two joined or corresponding parts not used separately
(pair) a set of two similar things considered as a unit