This is the 7505th most frequent French word.
pollution
Pollution: The presence or introduction of harmful substances or contaminants into the environment.
Here, 'pollution' is used as a noun describing the contamination of air.
La pollution de l'air affecte la santé de millions de personnes.
Air pollution affects the health of millions of people.
In this sentence, 'pollution' refers to its general harmful effects and societal impact.
Elle sensibilise le public sur les dangers de la pollution.
She raises awareness among the public about the dangers of pollution.
'Pollution' is utilized here in the context of actions to decrease environmental contamination overall.