systema nervosum centrale vs pyramidal motor system

systema nervosum centrale and pyramidal motor system both are nouns.

Word	Noun	Adjective	Verb	Adverb
systema nervosum centrale	Yes	No	No	No
pyramidal motor system	Yes	No	No	No

systema nervosum centrale (noun)	pyramidal motor system (noun)
the portion of the vertebrate nervous system consisting of the brain and spinal cord	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