$BNB A BNB coin pair refers to a trading pair on a cryptocurrency exchange where one cryptocurrency is traded against Binance Coin (BNB). For example, BTC/BNB is a trading pair where Bitcoin (BTC) can be exchanged for BNB, and ETH/BNB is a pair where Ethereum (ETH) is exchanged for BNB. These pairs are crucial for trading and allow users to swap BNB for other digital assets or vice versa.