meningeal veins vs vena

meningeal veins and vena both are nouns.

Word	Noun	Adjective	Verb	Adverb
meningeal veins	Yes	No	No	No
vena	Yes	No	No	No

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

meningeal veins: veins at accompany the meningeal arteries
vena: a blood vessel that carries blood from the capillaries toward the heart

Other hypernyms of meningeal veins include vein, venous blood vessel.

meningeal veins (noun)	vena (noun)
veins at accompany the meningeal arteries	a blood vessel that carries blood from the capillaries toward the heart