Ballpoints are a widely used writing utensil that consists of a small ball bearing at the tip of the pen, which rolls over paper and releases ink as it moves. Although the term "ballpoint" is the most commonly used name for this writing instrument, there are several synonyms that can be used to refer to it. Some of these words include a ball pen, biro, rollerball pen, ballpen, or simply a pen. Each of these terms is used interchangeably depending on personal preference or regional dialect. Regardless of what term is used, the ballpoint pen has become an essential writing tool for people around the world.