intervertebral vein vs vena

intervertebral vein and vena both are nouns.

Word	Noun	Adjective	Verb	Adverb
intervertebral vein	Yes	No	No	No
vena	Yes	No	No	No

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

intervertebral vein: one of several veins accompanying spinal nerves
vena: a blood vessel that carries blood from the capillaries toward the heart

Other hypernyms of intervertebral vein include vein, venous blood vessel.

intervertebral vein (noun)	vena (noun)
one of several veins accompanying spinal nerves	a blood vessel that carries blood from the capillaries toward the heart