Price of money and Prime interest rate

Prime interest rate and price of money are semantically related in interest rate topic. In some cases you can use "Prime interest rate" instead a noun phrase "Price of money", when it comes to topics like sum charged for use of money.

Prime interest rate noun - The interest rate on short-term loans that banks charge their commercial customers with high credit ratings.

Price of money and prime interest rate are semantically related in interest rate topic. You can use "Price of money" instead a noun phrase "Prime interest rate", if it concerns topics such as sum charged for use of money.