Another name for trick-or-treating is "guising." The term "guising" originated in Scotland and refers to the practice of dressing up in costumes and going from house to house, performing a song, joke, or other form of entertainment in exchange for treats. In the early tradition of guising, children would often wear masks or disguise their faces to ward off evil spirits. Over time, the term "trick-or-treat" became more commonly used, especially in North America, to describe the Halloween tradition of going door-to-door, requesting treats, and occasionally playing harmless pranks.