hemizygous vein vs hemizygos vein

hemizygous vein and hemizygos vein both are nouns.

Word	Noun	Adjective	Verb	Adverb
hemizygous vein	Yes	No	No	No
hemizygos vein	Yes	No	No	No

As nouns, hemizygous vein and hemizygos vein are synonyms defined as:

hemizygous vein and hemizygos vein: a continuation of the left ascending lumbar vein; crosses the midline at the 8th vertebra and empties into the azygos vein

Other synonyms of hemizygous vein include vena hemizygos.

hemizygous vein (noun)	hemizygos vein (noun)
a continuation of the left ascending lumbar vein; crosses the midline at the 8th vertebra and empties into the azygos vein	a continuation of the left ascending lumbar vein; crosses the midline at the 8th vertebra and empties into the azygos vein