What are the different FedEx shipping codes?

FedEx uses various shipping codes to categorize its services, including FedEx Express, FedEx Ground, and FedEx Freight. Common codes include "FDX" for FedEx Express, "FG" for FedEx Ground, and "FXF" for FedEx Freight. Each service has specific codes for different delivery options, such as "Priority Overnight" or "2Day," which indicate the speed and type of service. These codes help users select the appropriate service for their shipping needs.