📒 an act of giving something to somebody or doing something for somebody and receiving something in return
📒 the process of changing an amount of one currency for an equal value of another
📒 an arrangement when two people or groups from different countries visit each other’s homes or do each other’s jobs for a short time
📒 a conversation or an argument
📒 a building where business people met in the past to buy and sell a particular type of goods
📒 a place where phone calls are connected so that people can speak to each other