Tranquility (noun)

1. The state of being calm, peaceful, and untroubled.
2. Freedom from disturbance; stillness.

Origin:

Late 16th century (in the sense "stillness, calm"): from latin tranquilitas, from tranquilus "calm, still".

Examples:

1. The tranquility of the countryside was shattered by the sounds of explosions.
2. The tranquility of the room was disturbed by the sound of shattering glass.
3. She sought solace and tranquility in the stillness of the monastery.
4. The tranquility of the garden was disrupted by the sudden appearance of a group of tourists.
5. The tranquility of the lake was only disturbed by the occasional splash of a jumping fish.