Where is money is important in keynsian or classical approach of economy?

In the Keynesian approach, money is crucial as it influences aggregate demand and can impact economic output and employment levels, particularly in times of recession. Keynesians argue that changes in the money supply can affect interest rates, which in turn influence investment and consumption. Conversely, the classical approach emphasizes that money is neutral in the long run, primarily serving as a medium of exchange without affecting real output, as markets are assumed to be self-correcting and always at full employment. Thus, while money plays a significant role in Keynesian economics, it is seen as less impactful in the classical framework.