What is another word for airscrew?
Pronunciation: [ˈe͡əskɹuː] (IPA) 
Airscrew is a device used to provide lift and propulsion to aircraft. There are several synonyms for the term airscrew, such as propeller, screw propeller, helicopter rotor, helicopter propeller and rotary wing. These synonyms are used interchangeably to refer to the same thing, but may have slightly different connotations depending on the type of aircraft or application. For instance, a screw propeller refers to a propeller with a fixed pitch, while a variable pitch propeller allows the pitch to be adjusted to optimize performance. Similarly, a helicopter rotor is a type of airscrew that provides lift for vertical takeoff and landing, while a helicopter propeller may refer to the tail rotor that provides lateral stability for rotary-wing aircraft.
