Smog is a term that describes a type of air pollution characterized by a mixture of smoke and fog. It can be harmful to humans and the environment by contributing to respiratory problems, acid precipitation, and other environmental issues. However, there are many synonyms for the word "smog," including haze, particulates, air pollution, and inversion layer. These synonyms describe the same type of air pollution, but each word emphasizes a different aspect of the phenomenon. Whether it's caused by industrial activity, automobiles, or other human-caused pollution sources, smog is a serious issue that demands attention and action to protect our health and the environment.