subdue vs silence

subdue is not a noun while silence is a noun.

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

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

subdue (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)

subdue (verb)	silence (verb)
correct by punishment or discipline	cause to be quiet or not talk
bring under control by force or authority	keep from expression, for example by threats or pressure
make subordinate, dependent, or subservient
get on top of; deal with successfully
hold within limits and control
put down by force or intimidation