The discount rate is the interest rate on loans that the Federal Reserve makes to banks. Banks occasionally borrow from the Federal Reserve when they find themselves short on reserves. A lower discount rate? Banks' incentives to borrow reserves from the Federal Reserve, thereby? The quantity of reserves in the banking system and causing the money supply to ?.
The federal funds rate is the interest rate that banks charge one another for short-term (typically overnight) loans. When the Federal Reserve uses open-market operations to sell government bonds, the quantity of reserves in the banking system, banks' demand for borrowed reserves? , and the federal funds rate?.