When one currency is exchanged for another it's traded value creates a currency pair. Below are the Forex Majors and Forex Crosses.

USDCAD

USDCHF

USDJPY

EURUSD

EURGBP

EURJPY

EURNZD

EURAUD

EURCHF

EURCAD

GBPUSD

GBPEUR

GBPJPY

GBPNZD

GBPAUD

GBPCHF

GBPCAD

AUDUSD

AUDEUR

AUDJPY

AUDNZD

AUDCHF

AUDCAD

NZDUSD

NZDEUR

NZDJPY

NZDAUD

NZDCHF

NZDCAD