What's reserves resources? and what's the difference between reserves

what’s reserves resources? and what’s the difference between reserves and potential resources?

Reserve resources are those resources which can be harnessed or utilised but their use has not yet started or is limited.

The main difference between potential and reserved resources are that reserved resources are identified and their present quantity is known but they are not used because they are reserved for future.

Potential resources are those resources that have not been identified properly and they cannot be used because of the lack of technological skills.