金利鞘[kinrishou] interest margin
元鞘[motosaya] returning to normal after all is said and done
朱鞘[shuzaya] red-lacquered sword sheath
腱鞘[kenshou] sheath of tendon
腱鞘炎[kenshouen] inflammation of a tendon (sheath)

値鞘[nezaya] margin
鞘当て[sayaate] rivalry (in love, touching of sheaths)
逆鞘[gyakuzaya] (discount rate) negative spread
鞘取り[sayatori] brokerage