Frequency reuse is a concept in wireless communication that involves the use of the same frequency band in multiple geographic areas. This is achieved by dividing the service area into smaller zones, each with its own frequency subset. By reusing the same frequency band in different zones, more users can be served with the same amount of spectrum. There are several synonyms for this term, including spectrum reuse, channel reuse, and frequency sharing. All of these terms refer to the same fundamental concept of using available radio frequency spectrum as efficiently as possible to maximize the number of users that can be served.