<human>:  Please explain the difference between a router and a modem.
<bot>: The difference between a router and modem is that a router is used for connecting multiple devices in a network and establishing a communication between them whereas a modem is used for establishing communication between a computer and the Internet. A modem converts digital signals from the computer into analog signals that can be used to connect to the internet, while a router directs traffic between different computer networks and creates a network between multiple devices.