Van de Graaff generator vs electrostatic machine

Van de Graaff generator and electrostatic machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Van de Graaff generator	Yes	No	No	No
electrostatic machine	Yes	No	No	No

As nouns, Van de Graaff generator and electrostatic machine are synonyms defined as:

Van de Graaff generator and electrostatic machine: electrical device that produces a high voltage by building up a charge of static electricity

Other synonyms of Van de Graaff generator include electrostatic generator, Wimshurst machine.

Van de Graaff generator (noun)	electrostatic machine (noun)
electrical device that produces a high voltage by building up a charge of static electricity	electrical device that produces a high voltage by building up a charge of static electricity