Electron tube and Electronic device

Electron tube noun - Electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope.

Electronic device and electron tube are semantically related. In some cases you can use "Electronic device" instead a noun phrase "Electron tube".

Electronic device noun - A device that accomplishes its purpose electronically.

Electron tube and electronic device are semantically related. Sometimes you can replace phrase "Electron tube" with "Electronic device", this phrases are similar.