These two terms are usually used interchangeably in business. However, just as in different business fields, many such terms in the world are actually the same, and their meanings are different for everyone. Although many people will use them alternately most of the time, many people involved in international air cargo transportation will know the key differences between them. If we do not understand the differences of some of these terms, it may cause confusion in the transportation of air cargo, and may lead to misunderstandings about the financial implications of how the cargo is transported.