pollution
word
Definition
The presence or introduction of harmful substances into the environment, making air, water, or land dirty or unsafe.
Usage & Nuances
Used formally and informally to describe environmental harm. Common combinations: 'air pollution', 'water pollution', 'noise pollution'. Often followed by 'caused by' (e.g., 'pollution caused by factories'). Distinct from 'contamination' (which is sometimes more about specific poisons or hazardous waste).
Example Sentences
Air pollution is a big problem in many cities.
basic
Pollution hurts animals and plants.
basic
Factories cause water pollution by dumping waste into rivers.
basic
Many people wear masks because of high pollution levels.
natural
The government is working to reduce pollution from cars.
natural
Noise pollution makes it hard to sleep in the city.
natural