Passenger aircraft are vehicles that transport people from one place to another via air travel. There are a variety of synonyms that can be used to describe these aircraft, including airliners, commercial planes, civil aircraft, commercial aircraft, passenger planes, and transport planes. These airplanes are typically used for commercial purposes and may include single-engine prop planes, regional jets, narrow-body planes, wide-body planes, and double-decker planes. Passenger aircraft are designed to provide comfortable and safe air travel for their passengers and are equipped with amenities such as seating arrangements, entertainment systems, and lavatories. Synonyms for passenger aircraft can vary depending on specific features and uses, but they all refer to machines that transport people through the skies.