ひこう飛行hikou
1.

The act of moving through the air freely, often associated with aircraft or supernatural abilities to traverse the sky.

2.

A state of navigation through the atmosphere, characterized by various forms of vehicles or crafts that are designed to maintain altitude and travel from one point to another.

3.

The phenomenon of leaving traces in the air, such as the white clouds formed by airplanes as they fly at high altitudes.

4.

The capability or action associated with piloting and operating various flying machines, including the skill set of individuals trained for this purpose.

Example:

彼女は初めての飛行にたいへん神経質になっていた。

ひこうき飛行機hikouki
1.

A vehicle designed for travel through the air, utilizing either jet engines or propellers to generate thrust and lift with the help of its wings.

2.

A mode of transportation that enables human navigation through the atmosphere, distinctively characterized by its ability to ascend and glide above the ground.

3.

A powered flying machine that has revolutionized travel and transportation, first conceptualized and constructed by aviation pioneers in the early 20th century.

Example:

あなたは飛行機で旅行したことがありますか。

ひこうせん飛行船hikousen
1.

A type of aircraft that achieves lift by using a gas lighter than air, typically helium or hydrogen, contained within a large envelope, and is propelled by an engine.

2.

A buoyant flying vehicle designed for a slower pace of travel, often associated with leisurely exploration of the skies, as opposed to faster airplanes.

3.

A large, elongated aerial vessel that floats in the atmosphere and can maneuver through the air using onboard propulsion, commonly used for purposes such as advertising or sightseeing.

Example:

飛行船ってどんなかっこうしているの。

うちゅうひこうし宇宙飛行士uchuuhikoushi
1.

A trained individual who operates or travels aboard a spacecraft, conducting missions in the environment beyond Earth's atmosphere.

2.

A person who engages in activities related to space exploration, including conducting research and experiments in outer space.

3.

An expert in utilizing technology and equipment specifically designed for human survival and work in the extreme conditions of space.

Example:

その宇宙飛行士は月に降り立つのを見られた。

たんどくひこう単独飛行tandokuhikou
1.

一人で行う飛行のこと。特に、操縦者が他の支援や乗客なしで航空機を操作する状況を指す。

2.

他の航空機や人と共に飛行せず、自身の判断と技術で行う航空行動。

3.

航空機の操縦者が孤立した状況で、自己の責任で飛行を行うこと。

Example:

リンドバーグの大西洋横断無着陸単独飛行はめざましい偉業であった。