magnetron vs vacuum tube

magnetron and vacuum tube both are nouns.

Word	Noun	Adjective	Verb	Adverb
magnetron	Yes	No	No	No
vacuum tube	Yes	No	No	No

As nouns, vacuum tube is a hypernym of magnetron; that is, vacuum tube is a word with a broader meaning than magnetron:

magnetron: a diode vacuum tube in which the flow of electrons from a central cathode to a cylindrical anode is controlled by crossed magnetic and electric fields; used mainly in microwave oscillators
vacuum tube: electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

Other hypernyms of magnetron include electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, tube.

magnetron (noun)	vacuum tube (noun)
a diode vacuum tube in which the flow of electrons from a central cathode to a cylindrical anode is controlled by crossed magnetic and electric fields; used mainly in microwave oscillators	electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope