The term "highjacker" is commonly used to refer to someone who takes control of a vehicle or aircraft using force or threats. However, there are several other words that have similar meanings. A "skyjacker" refers specifically to someone who takes control of an aircraft, while a "carjacker" takes control of a car. The term "pirate" is also used to describe someone who illegally takes control of a ship for their own purposes. Other synonyms for "highjacker" include "hijacker," "sky pirate," "air pirate," and "vehicular thief." Regardless of the specific word used, the act of taking control of another person's vehicle or aircraft without permission is illegal and dangerous.