It is often used in reference to:
* Air pollution: This is the most common usage, referring to the contamination of the air with harmful substances like smoke, dust, and chemicals.
* Water pollution: This refers to the contamination of water bodies with pollutants like sewage, industrial waste, and agricultural runoff.
* Soil pollution: This refers to the contamination of soil with pollutants like heavy metals, pesticides, and industrial waste.
In short, "pradushan" encompasses all forms of pollution, emphasizing the negative impact it has on the environment and human health.