The word 囚犯 is formed by combining two pictographic and conceptual characters: 囚, which depicts a person (人) enclosed within a boundary (口), representing a captive or prisoner, and 犯, which conveys the idea of a transgression or invasion. Together, they create a compound meaning where the first character illustrates the state of being confined, and the second character provides the reason for that confinement, resulting in the complete concept of a "criminal offender" or "prisoner". It is a logical, meaning-based construction where the combined imagery and ideas tell a miniature story.