Some couriers also offer cargo or freight services. Cargo mainly refers to a large consignment of goods or products. Most people usually do not require the use of cargo services, unless they need to transport something that is either bulky and huge, or large in numbers. Cargo services are mainly used by businesses, such as manufacturers or exporters. The goods are transported in containers via ship, aircraft, train, van and/or truck.
Comparatively, cargo is slower, transports large consignments of goods, and guarantees the safety of the products. Courier, on the other hand, usually delivers smaller parcels like documents faster than a cargo would, but it does not tend to ensure the occurrence of wear and tear to the package, as it is usually not a huge concern for envelopes. While transporting a large consignment of goods, a cargo service will tend to give a better price than a courier. This is due to the fact that a freighter (the cargo service) gets economies of scale, which means that since it transports a large number of goods of a large number of companies together, the total cost of transport gets distributed among the goods. So, the cost per product or for each good is much less than what it would be for a courier.