cubital joint vs elbow joint

cubital joint and elbow joint both are nouns.

Word	Noun	Adjective	Verb	Adverb
cubital joint	Yes	No	No	No
elbow joint	Yes	No	No	No

As nouns, cubital joint and elbow joint are synonyms defined as:

cubital joint and elbow joint: hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped

Other synonyms of cubital joint include articulatio cubiti, cubitus, elbow, human elbow.

cubital joint (noun)	elbow joint (noun)
hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped	hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped