Lan and Wireless fidelity

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.

Wireless fidelity and lan are semantically related. In some cases you can replace phrase "Wireless fidelity" with "Lan", this terms are similar.

Wireless fidelity 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 wireless fidelity are semantically related. You can use "Lan" instead a noun phrase "Wireless fidelity".