repress vs smother

repress is not a noun while smother is a noun.

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

As verbs, repress and smother are synonyms defined as:

Other synonyms of repress include muffle, stifle, strangle.

repress (noun)	smother (noun)
	a stifling cloud of smoke
	a confused multitude of things

repress (verb)	smother (verb)
block the action of	deprive of oxygen and prevent from breathing
put out of one's consciousness	suppress in order to conceal or hide
suppress in order to conceal or hide	envelop completely
put down by force or intimidation	deprive of the oxygen necessary for combustion
impede or hinder the natural development or self-expression of	form an impenetrable cover over