As a noun it is the quality of being quiet. Silence reigns supreme in an empty room.
As a verb it is the action of causing silence. 'Silence that man.' the judge ordered the bailiff.
P.S. You literally answered your own question by example.
I can give you several sentences.
I asked for silence in the room.
The librarian demanded silence.
Silence your tongue this instance.
There was nothing but silence all around him.
use it by saying- how can you use the word ebullient in a sentence?
Just use it! Or do you mean, can you use the word beheld in a sentence.
You can use the word feces in a sentence to mean excrement.
How do you use the word decibel in a sentence?What is decibel used for?
the word rag in a sentence
there was an instant silence between the two of them.
When the child got yelled at there was an award silence.
Speech is silver but silence is golden.
'The Silence of the Lambs' is a horror film.
I am quite fond of peace and silence.
The teacher asked the class for a vocal answer rather than head nods and silence.
In an effort to silence the voices of those they disagreed with, the left wing group MoveOn.org arranged for a boycott of Target.
"His answer to torture was stoic silence.", said the hangman.
the woods was filled with silence and darkness.
There was an ominous silence as the question was asked; it seemed nobody had an answer
This sentence contains the word subsides. Just kidding, you could say something like "There is a loud noise in the romm which soon subsides to silence" or "I will talk to you as soon as this noise subsides.
A good way to use retentive in a sentence is... "How do you use the word retentive in a sentence?"