Answer:
A right grants the authority to perform an action on a system. A permission grants access to a resource.
Explanation:
In System administration there are different rights and permissions are given to the user as per the requirement to perform some actions and accessing some resources.
Rights are given to the users may be at admin level to perform some action or make some changes in the system. The users who have rights of the system can add, edit or delete data from the system as per requirement of the company.
Many peoples granted by permissions by providing them some passwords to access the resources of the systems. These users did not have the right to change, add, edit or delete any data. They just can use the information.