악령, or "evil spirits," are supernatural entities often associated with malevolent intentions in various cultures. They are believed to cause harm, misfortune, or illness to individuals or communities. In many traditions, these spirits are thought to be the souls of the deceased who have not found peace or have been wronged in life. In folklore, 악령 can take various forms, such as ghosts or demons, and are often depicted in stories and myths. People may perform rituals or seek the help of shamans or priests to ward off these spirits and protect themselves from their negative influence. The concept of 악령 is prevalent in cultures around the world, reflecting deep-seated fears and beliefs about the afterlife and the unseen forces that affect human lives.