肋骨[abarabone] rib
肋間神経痛[rokkanshinkeitsuu] intercostal neuralgia
肋膜[rokumaku] pleura
肋木[rokuboku] wall bars
肋肉[baraniku] boned rib (esp. of pork or beef)

中肋[chuuroku] midrib
肋凹[rokuou] costal fovea
肋材[rokuzai] lumber (for the ribs of a ship)
肋筋[rokkin] stirrup (in reinforced concrete construction)

会厭軟骨[eennankotsu] epiglottis
眼軟膏[gannankou] eye ointment
硬軟[kounan] hardness
柔軟[juunan] flexible
柔軟仕上げ剤[juunanshiagezai] fabric softener

柔軟性[juunansei] flexibility
軟らか[yawaraka] soft
軟化[nanka] softening
軟膏[nankou] ointment
軟骨[nankotsu] cartilage

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