The Free On-line Dictionary of Computing (30 December 2018):

bus network

    A network topology in which all nodes are
   connected to a single wire or set of wires (the bus).  Bus
   networks typically use CSMA/CD techniques to determine which
   node should transmit data at any given time.

   Some networks are implemented as a bus, e.g. Ethernet -
   a one-bit bus operating at 10, 100, 1000 or 10,000 megabits
   per second.  Originally Ethernet was a physical layer bus
   consisting of a wire (with terminators at each end) to which
   each node was attached.  Switched Ethernet, while no longer
   physically a bus still acts as one at the logical layers.