nervii olfactorii vs olfactory nerve

nervii olfactorii and olfactory nerve both are nouns.

Word	Noun	Adjective	Verb	Adverb
nervii olfactorii	Yes	No	No	No
olfactory nerve	Yes	No	No	No

As nouns, nervii olfactorii and olfactory nerve are synonyms defined as:

nervii olfactorii and olfactory nerve: a collective term for numerous olfactory filaments in the nasal mucosa

Other synonyms of nervii olfactorii include first cranial nerve.

nervii olfactorii (noun)	olfactory nerve (noun)
a collective term for numerous olfactory filaments in the nasal mucosa	a collective term for numerous olfactory filaments in the nasal mucosa