Link vs Channel in computer networking

Question

While reading computer networking, I am confused between link and channel and seen people using this interchangeably (which often bugs me).

Language written in books and forums

A link refers to the most basic physical or logical connection between two devices. It's the pathway for data transmission.

Then what does channel mean? It includes the actual physical medium like copper wires, RF and etc.

This is so confusing to me. So I thought from a different perspective

Link is a concept that indicates whether two devices are connected or not. The channel identifies the physical medium being used. For example, A can connect to B via Ethernet, and A can connect to C via RF.

What do you think about this?

Comments

Channel is made from frequency distribution , In a single link there can be multiple channel .

e.g. In radio broadcasting. Stations broadcast continuously but are assigned and occupy a different frequency in the radio spectrum.