You send: Bitcoin Cash
Bitcoin Cash split from Bitcoin in 2017 to allow larger blocks and cheaper on-chain payments. It keeps Bitcoin's 21 million supply cap and uses its own address format, CashAddr. More about Bitcoin Cash.
On this pair it moves over Bitcoin Cash — an address there starts with q or p (CashAddr), or 1 / 3 (legacy).
BCH also exists on other networks — different addresses, not interchangeable: BEP20.


