Interchange refers to the process of exchanging goods, services, or information between parties. It is a fundamental concept in economics and trade, facilitating the flow of resources and enhancing cooperation among individuals, businesses, and nations. Interchange can occur in various forms, such as bartering, monetary transactions, or digital exchanges. In transportation, an interchange is a junction where different routes or modes of transport meet, allowing for the transfer of passengers or goods. For example, a highway interchange enables vehicles to switch between roads, while a train interchange allows passengers to change trains, improving connectivity and efficiency in travel.