Shipping companies are organizations that specialize in transporting goods from one place to another. UPS (United Parcel Service) and USPS (United States Postal Service) are two of the most popular shipping companies in the United States. UPS is a global package delivery company that offers a variety of services, including ground, air, and international shipping. USPS is a government-run postal service that provides mail delivery, package delivery, and other services. Both companies offer reliable and cost-effective shipping solutions for businesses and individuals.