Nope. A hub is a Layer 1 device and all traffic is shared and collisions can occur. Hence the term collision domain. A switch is layer 2 and all broadcasts are shared (broadcast domain), but host to host communication is not (which enables full duplex). A router is layer 3 and does not forward broadcasts.
As for whether you can "see on a network", that depends. A router forwards traffic between separate networks and thus one network can "see" the other. However, if "see" means "can I sniff the network" the answer is no (if you had to ask).