The word "俘虏" is formed by combining the characters "俘" and "虏". "俘" is composed of "人" (person) and "孚" (which provides phonetic and semantic elements related to capture), denoting a captured person. "虏" is composed of "虍" (tiger, symbolizing fierceness) and "力" (force), denoting capture through coercion. Together, they semantically reinforce each other to mean "captive" or "prisoner of war", emphasizing both the person taken and the forceful act of capture.