How is circuit switching different from message switching ?

In circuit switching, a complete physical connection is established between the sender and the receiver and then data is transmitted from the source computer to the destination computer.

In message switching, no physical copper path is established in advance between sender and receiver. Instead when the sender has a block of data to be sent, it is stored in first switching office, then forwarded later, one jump at a time until the data is delivered to the destination computer. It works on the store and forward principle.