USPS, the United States Postal Service, is a well-known government agency responsible for delivering letters, packages, and other mailings within the United States and globally. However, there are several synonyms for USPS, including the Postal Service, the U.S. Mail, the USPS, the U.S. Postal Service, and the Mail Service. These synonyms are often used interchangeably to describe the same service provided by the government. In addition to delivering mail, the USPS also offers various other services, such as tracking and signature confirmation, forwarding mail, and buying stamps online. Overall, USPS remains a crucial component of the nation's communication and commerce infrastructure.