Air cargo is transported only by airplane, while freight includes sea transportation, land transportation and railway transportation. The most suitable transportation method can be selected according to the characteristics of the cargo.

Cargo usually refers to items transported by various means in commercial trade, including sea transportation, air transportation, land transportation, etc. Freight mainly focuses on the transportation method and process of cargo, including the loading, transportation and unloading of cargo. Freight also involves cargo logistics planning, route selection and cargo tracking. In addition, Freight also has direct contact with the financial aspects of cargo transportation, such as freight calculation and insurance.