First, we'll need to find the definition for "unit cost" and "unit rate"
What is a unit rate?
Rates are usually expressed as a quantity of 1 such as 2 feet per second or 5 miles per hour
The words: miles per hour or feet per hour is a unit rate.
What is a unit cost?
Unit costs are used as a measure of a company's cost to build one unit of a product. This includes fixed costs and variable costs.
In conclusion.
Unit rates and unit costs are almost the same thing. But, they're sometimes used in different ways.