$USDC A pair coin typically refers to a cryptocurrency trading pair, where one digital asset is exchanged for another on a trading platform. For example, BTC/USDT represents Bitcoin traded against Tether. These pairs facilitate market liquidity and price discovery, allowing traders to swap assets efficiently. Some platforms offer fiat-to-crypto pairs (e.g., USD/BTC), while others focus on crypto-to-crypto pairs. The selection of a trading pair depends on market availability, liquidity, and user preference. Stablecoin pairs, such as ETH/USDT, are popular for minimizing volatility. Understanding pair coins is essential for crypto trading, arbitrage, and portfolio diversification in digital asset markets.