俘囚 （フシュウ） prisoner (of war), captive, Emishi allied with the Japanese during the Nara and Heian periods

俘虜 （フリョ） prisoner of war, captive

夷俘 （イフ） Emishi allied with the central government (ritsuryō period)

虜 （とりこ） captive, prisoner, victim (of love, etc.), slave (to one's lust, etc.)