aerostat

Noun

Meaning

A balloon.

A balloonist; an aeronaut.

Source: Webster's dictionary

plane aerodrome balloon airship aeroplane dirigible balloonist aircraft airplane spaceship blimp zeppelin aeronaut hydroplane gasbag

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A balloon was originally any aerostat, while the term airship was used for large, powered aircraft designs – usually fixed-wing. Source: Internet

Airships are a type of aerostat. Source: Internet

Nowadays a "balloon" is an unpowered aerostat and an "airship" is a powered one. Source: Internet