privilege: (law) the right to refuse to divulge information obtained in a confidential relationship
right: an abstract idea of that which is due to a person or governmental body by law or tradition or nature; ; - Eleanor Roosevelt
pyramidal tract: any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord