What is difference between rate and unit rate?

A rate is a comparison of two different quantities, often expressed as a fraction, such as miles per hour or cost per item. A unit rate, on the other hand, is a specific type of rate where the second quantity is standardized to one unit, making it easier to understand and compare. For example, if a car travels 300 miles in 5 hours, the rate is 300 miles per 5 hours, but the unit rate would be 60 miles per hour.