幹事[kanji] executive secretary
幹事会[kanjikai] board of governors
幹事長[kanjichou] chief secretary (usu. of a party)
幹線[kansen] main line
幹線道路[kansendouro] main road

幹竹割り[karatakewari] cutting straight down
幹部[kanbu] management
幹部会[kanbukai] board of directors
幹流[kanryuu] main current
幹理[kanri] superintendence

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