What do you mean by "exchange" and "prance" in Go?
Exchange refers to transformation, which refers to the transformation of the territory of Go. For example, what was originally mine has become yours, but your things have become my specific gains and losses, which requires me to judge for myself. Moving means doing work. For example, if one's chess piece enters someone else's house, it needs two eyes to do work or escape from the local encirclement. This process is called prancing.