squelch vs slog

squelch is a noun but slog is not a noun.

Word	Noun	Adjective	Verb	Adverb
squelch	Yes	No	Yes	No
slog	No	No	Yes	No

As verbs, slog is a hypernym of squelch; that is, slog is a word with a broader meaning than squelch:

Other hypernyms of squelch include footslog, pad, plod, tramp, trudge.

squelch (noun)	slog (noun)
an electric circuit that cuts off a receiver when the signal becomes weaker than the noise
a crushing remark

squelch (verb)	slog (verb)
suppress or crush completely	strike heavily, especially with the fist or a bat
to compress with violence, out of natural shape or condition	walk heavily and firmly, as when weary, or through mud
walk through mud or mire	work doggedly or persistently
make a sucking sound