vena hepatica vs hepatic vein

vena hepatica and hepatic vein both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena hepatica	Yes	No	No	No
hepatic vein	Yes	No	No	No

As nouns, vena hepatica and hepatic vein are synonyms defined as:

vena hepatica and hepatic vein: a vein that drains the liver; empties into the vena cava

vena hepatica (noun)	hepatic vein (noun)
a vein that drains the liver; empties into the vena cava	a vein that drains the liver; empties into the vena cava