Agitation (noun)

1. The act or state of being agitated, or disturbed emotionally.
2. The act of stirring up or making something active.

Origin:

From latin agitatio, from agitare ("to move, set in motion").

Examples:

1. She was filled with agitation as she waited for the test results.
2. The agitation of the water caused the sediment to settle.
3. The political agitation led to a change in government.
4. The agitation caused by the barking dog kept the neighborhood awake.
5. The room was full of agitation as people discussed the controversial topic.