Elbow joint and Hinge joint

Elbow joint noun - Hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped.

Hinge joint and elbow joint are semantically related. In some cases you can use "Hinge joint" instead a noun phrase "Elbow joint".

Hinge joint noun - A freely moving joint in which the bones are so articulated as to allow extensive movement in one plane.

Elbow joint and hinge joint are semantically related. Sometimes you can replace phrase "Elbow joint" with "Hinge joint", this phrases are similar.