suppress vs silence

suppress is not a noun while silence is a noun.

Word	Noun	Adjective	Verb	Adverb
suppress	No	No	Yes	No
silence	Yes	No	Yes	No

As verbs, silence is a hyponym of suppress; that is, silence is a word with a more specific, narrower meaning than suppress:

suppress (noun)	silence (noun)
	the absence of sound
	a refusal to speak when expected
	the trait of keeping things secret
	the state of being silent (as when no one is speaking)

suppress (verb)	silence (verb)
bring under control by force or authority	cause to be quiet or not talk
lessen to the point of stopping	keep from expression, for example by threats or pressure
put out of one's consciousness
consciously restrain from showing; of emotions, desires, impulses, or behavior
come down on or keep down by unjust use of one's authority