an electronic machine that can store and process large quantities of information
John's computer is broken.

a room or building where books and other similar materials are available for a person to use or borrow
Don't use a cell phone in the library.

in a quiet manner, without making much or any sound
The boy reads a book quietly.

an official statement which explains how things must be done and what is allowed in a particular system or situation
Do not break a school rule.

without making any noise; soundless
It was silent inside the library.

to stop electricity flowing; to cut the power to an electrical device or light
Don’t forget to turn off the stove before you leave.