Ginglymus and Knee joint

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

Knee joint and ginglymus are semantically related. In some cases you can replace phrase "Knee joint" with "Ginglymus", this terms are similar.

Knee joint noun - Hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella.

Ginglymus and knee joint are semantically related. You can use "Ginglymus" instead a noun phrase "Knee joint".