There are several synonyms for the term "captured-air vehicles". One of them is "aerial drones", which refers to small unmanned aircraft that can be remotely piloted or flown autonomously. Another synonym is "airborne robots", which also describes unmanned aircraft used for various purposes such as surveillance, exploration, and delivery. "Flying machines" is another term that can be used to describe captured-air vehicles as it suggests vehicles that can fly or maneuver through the air. Lastly, "remote-controlled planes" is another synonym that describes captured-air vehicles that can be controlled from a distant location through a remote controller or a computer. These synonyms can be used interchangeably and are useful in different situations or contexts.