tenth cranial nerve vs nervus vagus

tenth cranial nerve and nervus vagus both are nouns.

Word	Noun	Adjective	Verb	Adverb
tenth cranial nerve	Yes	No	No	No
nervus vagus	Yes	No	No	No

As nouns, tenth cranial nerve and nervus vagus are synonyms defined as:

tenth cranial nerve and nervus vagus: a mixed nerve that supplies the pharynx and larynx and lungs and heart and esophagus and stomach and most of the abdominal viscera

Other synonyms of tenth cranial nerve include pneumogastric, pneumogastric nerve, vagus, vagus nerve, wandering nerve.

tenth cranial nerve (noun)	nervus vagus (noun)
a mixed nerve that supplies the pharynx and larynx and lungs and heart and esophagus and stomach and most of the abdominal viscera	a mixed nerve that supplies the pharynx and larynx and lungs and heart and esophagus and stomach and most of the abdominal viscera