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.
Definition of consumerism for English Language Learners. : 1  the belief that it is good for people to spend a lot of money on goods and services. : 2  the actions of people who spend a lot of money on goods and services.