せん状骨[senjoukotsu] scaphoid bone (in wrist near thumb)
遺骨[ikotsu] remains
化骨[kakotsu] ossification
会厭軟骨[eennankotsu] epiglottis
がい骨[gaikotsu] skeleton

雁骨[kariganebone] scapula
気骨[kikotsu] (moral) backbone
侠骨[kyoukotsu] chivalrous spirit
胸骨[kyoukotsu] breastbone
筋骨[kinkotsu] muscles (sinews) and bones

遺骸[igai] remains
骸骨[gaikotsu] skeleton
形骸[keigai] ruin
残骸[zangai] ruins

亡骸[nakigara] remains
屍骸[shigai] body
形骸化[keigaika] becoming a mere shell or dead letter
聖骸布[seigaifu] holy shroud (i.e. the Shroud of Turin)