Electronic mail and Electronic communication

Electronic mail noun - (computer science) a system of world-wide electronic communication in which a computer user can compose a message at one terminal that can be regenerated at the recipient's terminal when the recipient logs in.

Electronic communication and electronic mail are semantically related. In some cases you can use "Electronic communication" instead a noun phrase "Electronic mail".

Electronic communication noun - Communication by computer.

Electronic mail and electronic communication are semantically related. Sometimes you can replace phrase "Electronic mail" with "Electronic communication", this phrases are similar.