is a specific kind of: bone, os.

is a broader term that covers: navicular, os scaphoideum, scaphoid bone | lunate bone, os lunatum, semilunar bone | cuneiform bone, os triquetrum, pyramidal bone, triquetral, triquetral bone | os pisiforme, pisiform, pisiform bone | os trapezium, trapezium, trapezium bone | os trapezoideum, trapezoid, trapezoid bone | capitate, capitate bone, os capitatum | hamate, hamate bone, os hamatum, unciform bone.

is a part of: articulatio radiocarpea, carpus, radiocarpal joint, wrist, wrist joint.