silence vs sound property

silence and sound property both are nouns.

Word	Noun	Adjective	Verb	Adverb
silence	Yes	No	Yes	No
sound property	Yes	No	No	No

As nouns, sound property is a hypernym of silence; that is, sound property is a word with a broader meaning than silence:

silence (noun)	sound property (noun)
the absence of sound	an attribute 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)

silence (verb)	sound property (verb)
cause to be quiet or not talk
keep from expression, for example by threats or pressure