vena diploica vs diploic vein

vena diploica and diploic vein both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena diploica	Yes	No	No	No
diploic vein	Yes	No	No	No

As nouns, vena diploica and diploic vein are synonyms defined as:

vena diploica and diploic vein: one of the veins serving the spongy part of the cranial bones

vena diploica (noun)	diploic vein (noun)
one of the veins serving the spongy part of the cranial bones	one of the veins serving the spongy part of the cranial bones