portal vs hepatic portal vein

portal and hepatic portal vein both are nouns.

Word	Noun	Adjective	Verb	Adverb
portal	Yes	No	No	No
hepatic portal vein	Yes	No	No	No

As nouns, portal and hepatic portal vein are synonyms defined as:

portal and hepatic portal vein: a short vein that carries blood into the liver

Other synonyms of portal include portal vein, vena portae.

portal (noun)	hepatic portal vein (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
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