The difference between communication devices and communication media is the different roles each play in regard to data in the communication process. Communication media is the means, technology or channel of delivering and receiving data or information. Communication devices are pieces of equipment or hardware designed to move data or information from one location to another.
Communication devices and communication media are dependent on each other. Without the medium that allows for the transmission of information, communication devices would have no way to function and would have no purpose.
In computer systems and networks, common communication devices include a network interface card, a modem, an access point, a Wi-Fi card and a modem. In telecommunications, common media include microwave transmission, fiber optics, radio signals and wires.
Language is the method of communicating and creating connections to other people. A book provides the means by which language is shared. In this example, language is the communication media, and the book is the communication device. More specifically, a cellphone acts as the communication device through which the communication media in the form of digital signal transmissions travels.
The phrase communication media is sometimes used instead of or to mean the same as mass media or news media.