はいいろ灰色haiiro
1.

A color that is created by lightening black to a point where it approaches white, often associated with the color of ash or concrete.

2.

A state of emotional dullness or melancholy, indicating a lack of joy or brightness in one's life.

3.

A term used to describe a situation or individual that is ambiguous or suspicious, particularly regarding involvement in dubious activities, reflecting a lack of clarity between right and wrong.

Example:

私の父は青と灰色のネクタイを持っている。

はいhai
1.

A fine powdery substance that remains after something has been burned completely, often associated with the remnants of organic materials or other burnable items.

2.

The residue left from combustion, symbolizing destruction or transformation, and may carry connotations of loss, memory, or the passage of time in various cultural contexts.

3.

The byproduct of incineration, often found in places where fire has occurred, which can serve as a reminder of what was once present, highlighting themes of mortality and change.

Example:

すべては燃えてとなった。

はいざら灰皿haizara
1.

A receptacle designed for holding the remnants of cigarettes, including ash and butts, to keep the surrounding area clean and organized.

2.

A small vessel typically made of nonflammable materials, used specifically to collect discarded tobacco products to prevent littering and reduce fire hazards.

3.

An object found in homes or public places intended to provide a designated space for safely disposing of the ashes and remnants of smoking materials.

Example:

その缶は灰皿の代わりになる。

かいじん灰燼kaijin
1.

The remaining residue of a substance after it has been burned, consisting of fine particles of ash and remaining embers.

2.

A state of complete annihilation, particularly referring to something that has been reduced to ashes, leaving no trace behind.

3.

Refers to both the ash and the charred remnants left after combustion, symbolizing the aftermath of destruction by fire.

かざんばい火山灰kazanbai
1.

A fine, powdery material produced when a volcano erupts, consisting of tiny fragments of rock, minerals, and volcanic glass that are ejected into the air during explosive volcanic activity.

2.

The result of the fracturing and dispersing of magma during a volcanic explosion, creating a material that can settle over large areas, affecting the environment and human activities.

3.

A byproduct of volcanic eruptions that can pose hazards to air travel, agriculture, and human health due to its ability to create airborne particles and blanket landscapes.

4.

A naturally occurring material that forms from the rapid cooling and solidification of volcanic materials, often contributing to soil fertility but also causing challenges in disaster situations.