particle beam vs electron beam

particle beam and electron beam both are nouns.

Word	Noun	Adjective	Verb	Adverb
particle beam	Yes	No	No	No
electron beam	Yes	No	No	No

As nouns, electron beam is a hypernym of particle beam; that is, electron beam is a word with a broader meaning than particle beam:

particle beam: a collimated flow of particles (atoms or electrons or molecules)
electron beam: a group of nearly parallel lines of electromagnetic radiation

Other hypernyms of particle beam include beam, ray.

particle beam (noun)	electron beam (noun)
a collimated flow of particles (atoms or electrons or molecules)	a group of nearly parallel lines of electromagnetic radiation