(a) Boom is a period of time during which sales of a product or business activity increases very rapidly. In the stock market, booms are associated with bull markets, whereas busts are associated with bear markets. Recession is A significant decline in activity across the economy, lasting longer than a few months. It is visible in industrial production, employment, real income and wholesale-retail trade. Depression is a severe and prolonged downturn in economic activity. In economics, a depression is commonly defined as an extreme recession that lasts two or more years. Economic Recovery is a period of increasing business activity signaling the end of a recession. Much like a recession, an economic recovery is not always easy to recognize until at least several months after it has begun.
