pollution

noun
A2
1
A2
the process of making air, water, soil, etc. dirty; the state of being dirty
آلودگی, آلایش
2
A2
substances that make air, water, soil, etc. dirty
آلودگی, آلودگی محیطی, آلودگی زیست‌محیطی
beaches covered with pollution
The new buses emit no more pollution than the average car.
3
harmful or annoying levels of noise, or of artificial light at night
آلودگی صوتی, آلودگی نوری
Heavy traffic flow is a major source of noise pollution in urban areas.
The government has announced plans to tackle light pollution.