One synonym for "nick joints" is "pivot joints," which are joints that allow movement in one direction only. Another synonym is "hinge joints," which are joints that allow for movement in only one plane or direction, like the hinge on a door. "Ball and socket joints" are also a synonym for "nick joints," which are joints that allow for a wide range of movements in all directions, like the hip joint. "Saddle joints" are another synonym, which are joints that allow for motions like flexion, extension, abduction, and adduction, like the thumb joint. Lastly, "condyloid joints" are joints that allow motion in two directions, like the wrist joint.