Rate

1. A measure of a part with respect to the whole. This chart shows you the current tax rate.
2. A quantity measured with respect to another measured quantity. He maintained a rate of speed of 60 miles per hour.
3. A charge or payment calculated in relation to a particular sum. The interest rate on the loan was 6%.
4. To regard or account. They rated the movie as excellent.
5. To merit or deserve. Some people rate special treatment.