Ball and Socket Joint
Round end of one bone fits inside a cup-shaped ending on another bone (e.g. shoulders & hips)
Pivot Joint
Have a ring of bone that fits over a bone protrusion, around which it can rotate (e.g. neck)
Saddle Joint
Ends of two bones fit together in a special way (e.g. thumb)
Hinge Joint
Only allow forwards and backwards movement
Condyloid Joint
Have an oval shaped bone end which fits into a correspondingly shaped bone end (e.g. thumb)
Gliding Joint
Have two flat faces of bone that slide over one another