portal vs vena portae

portal and vena portae both are nouns.

Word	Noun	Adjective	Verb	Adverb
portal	Yes	No	No	No
vena portae	Yes	No	No	No

As nouns, portal and vena portae are synonyms defined as:

Other synonyms of portal include hepatic portal vein, portal vein.

portal (noun)	vena portae (noun)
a grand and imposing entrance (often extended metaphorically)	a short vein that carries blood into the liver
a short vein that carries blood into the liver
a site that the owner positions as an entrance to other sites on the internet