The trading pair (زوج التداول) is the relationship between two currencies being traded against each other, like BTC/USDT or ETH/BTC. Choosing the right pair depends on your goal: if you want to invest in Bitcoin with some relative stability, you would choose the BTC/USDT pair. If you want to take advantage of relative fluctuations between Ethereum and Bitcoin, you might choose ETH/BTC. The impact is seen in the commission and liquidity available in this pair; popular pairs tend to have higher liquidity and lower spreads. Before you open a position, you must ensure that this trading pair is suitable for the risk and profit strategy you are planning.