vena spinalis vs vena

vena spinalis and vena both are nouns.

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

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

vena spinalis: veins that drain the spinal cord
vena: a blood vessel that carries blood from the capillaries toward the heart

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

vena spinalis (noun)	vena (noun)
veins that drain the spinal cord	a blood vessel that carries blood from the capillaries toward the heart