vena maxillaris vs maxillary vein

vena maxillaris and maxillary vein both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena maxillaris	Yes	No	No	No
maxillary vein	Yes	No	No	No

As nouns, vena maxillaris and maxillary vein are synonyms defined as:

vena maxillaris and maxillary vein: posterior continuation of the pterygoid plexus; joins the superficial temporal vein to form the retromandibular vein

vena maxillaris (noun)	maxillary vein (noun)
posterior continuation of the pterygoid plexus; joins the superficial temporal vein to form the retromandibular vein	posterior continuation of the pterygoid plexus; joins the superficial temporal vein to form the retromandibular vein