squelcher vs put-down

squelcher and put-down both are nouns.

Word	Noun	Adjective	Verb	Adverb
squelcher	Yes	No	No	No
put-down	Yes	No	No	No

As nouns, squelcher and put-down are synonyms defined as:

Other synonyms of squelcher include squelch, takedown.

squelcher (noun)	put-down (noun)
an electric circuit that cuts off a receiver when the signal becomes weaker than the noise	a crushing remark
a crushing remark