smother vs muffle

smother and muffle both are nouns.

Word	Noun	Adjective	Verb	Adverb
smother	Yes	No	Yes	No
muffle	Yes	No	Yes	No

As verbs, smother and muffle are synonyms defined as:

Other synonyms of smother include repress, stifle, strangle.

smother (noun)	muffle (noun)
a stifling cloud of smoke	a kiln with an inner chamber for firing things at a low temperature
a confused multitude of things

smother (verb)	muffle (verb)
deprive of oxygen and prevent from breathing	suppress in order to conceal or hide
suppress in order to conceal or hide	deaden (a sound or noise), especially by wrapping
envelop completely
deprive of the oxygen necessary for combustion
form an impenetrable cover over