Macroeconomics studies the economy as a whole. It seeks to understand the big picture rather than detailed individual choices. Macroeconomics studies the state of the economy, considering how unemployment, aggregate income, average prices, interest rates, and inflation determine the overall level of economic activity.
Microeconomics deals with consumer behavior and economic choices as they relate to people, individual firms, and industries. Topics include consumer choice, supply and demand, resource and financial markets, competition, the market system, and public policy choices.