nouns
the state of being silent (as when no one is speaking)
"there was a shocked silence"; "he gestured for silence"
is a type of (narrower)
a state at a particular time
"a condition (or state) of disrepair"; "the current status of the arms negotiations"
the absence of sound
"he needed silence in order to sleep"; "the street was quiet"
a refusal to speak when expected
"his silence about my contribution was surprising"
the trait of keeping things secret