gluteal vein vs vena gluteus

gluteal vein and vena gluteus both are nouns.

Word	Noun	Adjective	Verb	Adverb
gluteal vein	Yes	No	No	No
vena gluteus	Yes	No	No	No

As nouns, gluteal vein and vena gluteus are synonyms defined as:

gluteal vein and vena gluteus: veins draining the gluteal muscles on either side of the body

gluteal vein (noun)	vena gluteus (noun)
veins draining the gluteal muscles on either side of the body	veins draining the gluteal muscles on either side of the body