The characteristic and an example of a synovial joint in humans is
Fluid filled synovial cavity between two bones - joint between atlas and axis – Pivot Joint (Synovial Joint)
Gliding joint between carpals - filled with synovial fluid (not lymph)
Cranial bones have fibrous joints; not synovial joints
Knee joint is flexible hinge joint.
Intercarpal joint is freely movable synovial joint.