Lan and Wifi

Lan noun - A local computer network for communication between computers; especially a network connecting computers and word processors and other electronic office equipment to create a communication system between offices.

Wifi and lan are semantically related. In some cases you can replace term "Wifi" with "Lan", this nouns are similar.

Wifi noun - A local area network that uses high frequency radio signals to transmit and receive data over distances of a few hundred feet; uses ethernet protocol.

Lan and wifi are semantically related. You can use "Lan" instead a noun "Wifi".