Federal funds rate versus other interest rates
The federal funds rate, as previously mentioned, is the overnight interest rate at which banks lend to each other. The federal funds rate is, importantly, an interest rate unto itself.
Second, the federal funds rate heavily influences the interest rates charged in the broader economy (and to consumers) by serving as a benchmark. One of the most cited rates is the prime rate, which is the interest rate banks charge to their best customers (or those most qualified to pay). The prime rate is directly influenced by the federal funds rate.