The global meteoric water line (GMWL) is commonly used to describe the relationship between the stable isotopes of hydrogen and oxygen in precipitation around the world. However, there are several other terms that can be used interchangeably with GMWL. These include the Global Oxygen-18 Water Vapor Line, the Global Mean Ocean Water Line, and the Global Terrestrial Water Line. These terms all describe the same phenomenon and are often used in different scientific fields such as climatology, hydrology, and geochemistry. Regardless of the term used, understanding the GMWL is crucial for researching the movement of water around the planet and its impact on natural systems.