Air cargo, commonly known as air freight, is collected by firms from shippers and delivered to customers. Aircraft were first used for carrying mail as cargo in 1911. Eventually manufacturers started designing aircraft for other types of freight as well.
A consumer is  a person or organization that uses economic services or commodities. In economic systems consumers are utilities expressed in the decision to trade or not.
In general terms, a customer is a person or organization that a marketer believes will benefit from the goods and services offered by the marketerâs organization. As this definition suggests, a customer is not necessarily someone who is currently purchasing from the marketer.