pyramidal motor system vs systema nervosum centrale

pyramidal motor system and systema nervosum centrale both are nouns.

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

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