vena sacralis vs vena

vena sacralis and vena both are nouns.

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

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

vena sacralis: vein of the sacral region
vena: a blood vessel that carries blood from the capillaries toward the heart

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

vena sacralis (noun)	vena (noun)
vein of the sacral region	a blood vessel that carries blood from the capillaries toward the heart