elbow joint vs ginglymoid joint

elbow joint and ginglymoid joint both are nouns.

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

As nouns, ginglymoid joint is a hypernym of elbow joint; that is, ginglymoid joint is a word with a broader meaning than elbow joint:

elbow joint: hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped
ginglymoid joint: a freely moving joint in which the bones are so articulated as to allow extensive movement in one plane

Other hypernyms of elbow joint include ginglymus, hinge joint.

elbow joint (noun)	ginglymoid joint (noun)
hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped	a freely moving joint in which the bones are so articulated as to allow extensive movement in one plane