Word Network: 地下水

A well; a deep hole dug to obtain water.

A layer of rock, soil, or sediment formed over time on the Earth's surface. It is a geological term used to describe the distinct horizontal beds that make up the ground.

Kankyou refers to the surroundings or conditions in which a person, animal, or plant lives or operates. It can describe the natural world (the environment) or specific social/physical settings like home, school, or work.

The process of making land, water, or air dirty and dangerous for living things through harmful substances. It is most commonly used in environmental contexts to describe pollution or chemical contamination.