derision vs squelcher

derision and squelcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
derision	Yes	No	No	No
squelcher	Yes	No	No	No

As nouns, squelcher is a hyponym of derision; that is, squelcher is a word with a more specific, narrower meaning than derision:

Other hyponyms of derision include jeer, jeering, mockery, scoff, scoffing, put-down, squelch, takedown, befooling, stultification.

derision (noun)	squelcher (noun)
the act of deriding or treating with contempt	an electric circuit that cuts off a receiver when the signal becomes weaker than the noise
contemptuous laughter	a crushing remark