ROV, which stands for remotely operated vehicle, has several synonyms that are often used interchangeably. One common synonym is underwater drone, which refers to a small, unmanned vehicle that is operated remotely to explore underwater environments. Other synonyms include submersibles, remotely operated underwater vehicles (ROUVs) and underwater robots. These vehicles are commonly used for scientific research, exploration, and commercial purposes such as oil exploration and underwater construction. They can maneuver through difficult underwater terrain and withstand harsh environmental conditions that would be dangerous or impossible for human divers to navigate. As technology advances, new synonyms for ROVs may emerge, as engineers and designers create new types of underwater vehicles for various applications.