A multi-homed host should not route packets from one network to another. Layer 2 devices that repeat network signals. Segment - Usually refers to an Ethernet segment, a collision domain. Segments are bounded by bridges or switches. Each device on the network is in its own collision domain and does not share bandwidth with other devices.
Ethernet switches are multi-port bridges.
Refers to Fast Ethernet network equipment. Network - Refers to an IP network or subnet, a portion of the network with the same network address space. Networks are bounded by routers and contain one or more segments.