arcuate vein of the kidney vs vena arcuata renis

arcuate vein of the kidney and vena arcuata renis both are nouns.

Word	Noun	Adjective	Verb	Adverb
arcuate vein of the kidney	Yes	No	No	No
vena arcuata renis	Yes	No	No	No

As nouns, arcuate vein of the kidney and vena arcuata renis are synonyms defined as:

arcuate vein of the kidney and vena arcuata renis: veins that receive blood from interlobular veins of kidney and rectal venules

arcuate vein of the kidney (noun)	vena arcuata renis (noun)
veins that receive blood from interlobular veins of kidney and rectal venules	veins that receive blood from interlobular veins of kidney and rectal venules