There are several synonyms for the term "world geographic reference system" such as global positioning system (GPS), global navigation satellite system (GNSS), global reference frame (GRF), and worldwide coordinate reference system (WCRS). These systems are used to determine the precise location of objects on Earth's surface, including points, lines, and areas. They provide accurate and standardized geographic coordinates that can be used for a variety of purposes, including military, scientific, and commercial applications. With the advent of modern technology, these systems have become increasingly sophisticated and reliable, making it easier to navigate and explore the world in unprecedented ways.