Wide Area Network

A network extended over hundreds of kilometers that can span a continent.

Think the internet.

Wide area networks cross continents and are the backbone of the Internet, which supports the web. They are typically based on optical fibers and are leased from telecommunication companies.

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WLAN

See Wifi.

WWAN

https://www.geeksforgeeks.org/overview-of-wireless-wide-area-network-wwan/?ref=next_article

Also see Cellular Network.