What is the difference between router and Wi-Fi router?

A wireless router, also called a Wi-Fi router, combines the networking functions of a wireless access point and a router. A router connects local networks to other local networks or to the Internet.

A router is a device that directs data traffic between networks, while a Wi-Fi router is a router that also provides wireless network access using Wi-Fi technology. In essence, a Wi-Fi router combines the functions of a standard router and a wireless access point, enabling devices to connect wirelessly.

Here's a more detailed breakdown:
Router:
Connects multiple networks (like your home network and the internet) and directs data packets between them.
Acts as a gateway, managing traffic flow and often including security features like a firewall.
Can be wired or wireless, but the term "router" often implies a wired connection to devices.
Wi-Fi Router:
Combines the functions of a router and a wireless access point (WAP).
Enables devices to connect to the internet wirelessly using Wi-Fi technology.
Has antennas to transmit and receive Wi-Fi signals.
Most modern home routers are Wi-Fi routers.

Key Differences Summarized:
Connectivity:
A router connects networks, while a Wi-Fi router connects devices to a network wirelessly and also connects networks.
Functionality:
A router is primarily a traffic director, while a Wi-Fi router adds the capability to connect devices wirelessly.
Usage:
Routers can be used in various network setups, while Wi-Fi routers are commonly used in homes and offices to provide wireless internet access.
In simple terms, if you want wireless internet access for your devices, you need a Wi-Fi router. If you need to connect different networks together, even without Wi-Fi, you might use a standard router.