A gyrocopter (or gyroplane) differs from a helicopter primarily in its rotor power source: a helicopter uses an engine-powered main rotor for lift and propulsion, allowing for vertical takeoff, hovering, and maneuverability. In contrast, a gyrocopter has an unpowered rotor that autorotates from the airflow created by a separate engine-driven propeller, requiring a short runway for takeoff and landing. This makes gyrocopters simpler, cheaper to operate, safer in engine failure, and incapable of hovering, while helicopters offer superior vertical flight capabilities for demanding tasks like rescue operations.