A trade is an exchange of goods or services between individuals or groups. It can occur on a small scale, such as a barter between friends, or on a larger scale, like international trade between countries. Trades are essential for economies, as they allow people to obtain what they need without having to produce everything themselves. In the context of employment, a trade often refers to a skilled profession, such as electricians, plumbers, or carpenters. These trades require specific training and expertise, enabling individuals to perform specialized tasks. Skilled trades are vital for infrastructure and services, contributing significantly to the economy.