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