What is the difference between "network" and "network"?

What is the difference between "network" and "network"? The network was first called by the mainland, which corresponds to the circuit. The circuit is connected to a wire, and the network is connected to a network cable. It is naturally called the network among the people. Later, the official discipline proper terminology was translated as the network, but some still use the previous folk names, such as circuit switch, network switch