くうき空気kuuki
1.

A colorless, odorless, and transparent mixture of gases that makes up the earth's atmosphere, essential for the survival of most living organisms on the planet, comprising primarily nitrogen and oxygen along with trace amounts of other gases.

2.

The prevailing mood or ambiance of a situation, often reflective of the collective sentiments or social tendencies among a group of people.

Example:

空気は音の媒体だ。

あっさくくうき圧搾空気assakukuuki
1.

Air that has been reduced in volume through the application of strong pressure, typically used in industrial or mechanical processes.

2.

Air that is pressurized in a controlled manner, often utilized for powering tools or equipment.

3.

A form of air that is dense due to external forces acting upon it, enabling its use in various applications such as pneumatic systems.

4.

Air that is confined within a space and subjected to compression, allowing it to store energy for later use.

あっしゅくくうき圧縮空気asshukukuuki
1.

Air that has been subjected to increased pressure, reducing its volume, and can be stored and used for various mechanical applications such as power tools and pneumatic systems.

2.

Pressurized air confined within an enclosed space, enabling it to release energy when allowed to expand, and utilized in various devices like air brakes and pneumatic hammers.

3.

A form of air that has been compacted through compressive forces, resulting in higher density, which is typically employed in industries for tasks requiring force or movement.

くうきこう空気孔kuukikou
1.

A small opening in a material that allows air to pass through, often found in structures or substances to facilitate ventilation.

2.

A void or cavity within a solid object that contains air, potentially affecting the object's properties or performance.

3.

An intentional gap in a formation or substance, designed to equalize pressure or improve airflow.

くうきていこう空気抵抗kuukiteikou
1.

The force that opposes the motion of an object as it moves through the atmosphere, affecting its speed and direction.

2.

The drag experienced by an object due to the presence of air, which acts against the object's intended path of movement.

3.

The phenomenon that occurs when an object encounters air while in motion, leading to a reduction in its velocity and efficiency.

4.

The opposing force generated by air molecules as they collide with a moving object, influencing its dynamics in flight or travel.