Drone is just a generic term. There are more specific terms for specific types of vehicles, and some of those terms have changed over the past few decades. UG

Drone is just a generic term. There are more specific terms for specific types of vehicles, and some of those terms have changed over the past few decades. UGV = unmanned ground vehicle UAS = unmanned aerial system UAV = unmanned aerial vehicle UUV = unmanned underwater vehicle Etc