Red beans are usually called kidney beans in the USA.
Kidney Beans and red beans are usually the same type of beans.
The red kidney beans are most commonly used in preparing Indian and North American cuisine, such as chili con carne and red beans and rice.
In our area we call kidney beans red beans.
But some people may just refer to the kidney beans as kidney beans.
If you're looking for kidney beans and cannot locate kidney beans then the store may have them under red beans.
Some places they may be a different type of beans though.