vena palatina vs vena

vena palatina and vena both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena palatina	Yes	No	No	No
vena	Yes	No	No	No

As nouns, vena is a hypernym of vena palatina; that is, vena is a word with a broader meaning than vena palatina:

vena palatina: a vein that drains the region of the palate and empties into the facial vein
vena: a blood vessel that carries blood from the capillaries toward the heart

Other hypernyms of vena palatina include vein, venous blood vessel.

vena palatina (noun)	vena (noun)
a vein that drains the region of the palate and empties into the facial vein	a blood vessel that carries blood from the capillaries toward the heart