Who is a person that buys and sells?

A person who buys and sells is often referred to as a trader or a merchant. Traders engage in the exchange of goods, services, or financial assets, aiming to profit from market fluctuations. Merchants typically operate in retail or wholesale environments, handling physical products, while traders might operate in financial markets dealing with stocks, currencies, or commodities. Both play essential roles in the economy by facilitating commerce and investment.