Bitcoin is commonly referred to by the symbols XBT or BTC, with the latter being the original symbol. Bitcoin Cash (BCH) is a separate cryptocurrency that was created as a result of a hard fork from Bitcoin in 2017. While both Bitcoin and Bitcoin Cash share many similarities, they have distinct differences in terms of block size, transaction speed, and overall philosophy. It's important to note that trading in Bitcoin and Bitcoin Cash can be volatile and unpredictable, and traders should conduct thorough research and practice proper risk management before making any trading decisions.