jugular vein vs vena jugularis

jugular vein and vena jugularis both are nouns.

Word	Noun	Adjective	Verb	Adverb
jugular vein	Yes	No	No	No
vena jugularis	Yes	No	No	No

As nouns, jugular vein and vena jugularis are synonyms defined as:

jugular vein and vena jugularis: veins in the neck that return blood from the head

Other synonyms of jugular vein include jugular.

jugular vein (noun)	vena jugularis (noun)
veins in the neck that return blood from the head	veins in the neck that return blood from the head