yes its called WAN
A router is a device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs or a LAN and its ISP's network. Routers are located at gateways, the places where two or more networks connect, and are the critical device that keeps data flowing between networks and keeps the networks connected to the Internet.
Two different networks are connected by a router. Switches are used to connect network devices within networks.
Computer network.
For two or more connected networks you can use a bridgeto connect them all together.It depends on the two networks. A bridge can only connect two networks of the same type (eg Ethernet or Token-Ring), that also use the same layer 3 network address (eg IP subnet or IPX network #, or AppleTalk network #).A "gateway" device can connect two dissimilar types that share a network address, and a router can connect two networks of different network addresses whether or not they have the same network type.
A bridge is a way to connect two networks. For example, if a user has two or more computers connected to a wired network, and one of those wired computers is connected to a wireless network, the computer connected to both the wired and wireless networks could be used as a bridge. With the bridged networks, the wired computers could access the wireless network.
computers in one office
interconnecting two or more networks(Inter networking)
This is usually used to describe the Internet. A few computers connected together is a computer network. A few computer networks connected together is a network of networks.
For a small LAN network, a switch is best. To connect two or more LAN networks, a router is required. (2) From Jean Andrews CompTIA A+ sixth edition (page #852): You can use a crossover cable to connect to computers without a switch or hub making it the simplest network of all. For two or more you will need a switch, hub, or router.
Media are connected to networks that make information easier to share and access.
== == The meaning of internet is a vast number of networks connected in to a world via tcp/ip INTERconnected NETworks
Two or more PCs connected together are commonly referred to as a "network." This can include local area networks (LANs), where computers are linked within a limited area, or larger networks like wide area networks (WANs) that connect multiple locations. In a network, PCs can share resources, such as files and printers, and communicate with each other.