squelcher vs electric circuit

squelcher and electric circuit both are nouns.

Word	Noun	Adjective	Verb	Adverb
squelcher	Yes	No	No	No
electric circuit	Yes	No	No	No

As nouns, electric circuit is a hypernym of squelcher; that is, electric circuit is a word with a broader meaning than squelcher:

squelcher: an electric circuit that cuts off a receiver when the signal becomes weaker than the noise
electric circuit: an electrical device that provides a path for electrical current to flow

Other hypernyms of squelcher include circuit, electrical circuit.

squelcher (noun)	electric circuit (noun)
an electric circuit that cuts off a receiver when the signal becomes weaker than the noise	an electrical device that provides a path for electrical current to flow
a crushing remark