* Light rain: rain that falls in small drops and is not heavy enough to cause puddles

* Moderate rain: rain that falls in drops that are larger than those of light rain but not as large as those of heavy rain

* Heavy rain: rain that falls in large drops and is heavy enough to cause puddles

* Torrential rain: very heavy rain that falls in large drops and is heavy enough to cause flooding

* Monsoon rain: heavy rain that falls during the monsoon season

* Acid rain: rain that is acidic due to the presence of pollutants in the atmosphere

* Black rain: rain that is black due to the presence of pollutants in the atmosphere

* Colored rain: rain that is colored due to the presence of pollutants in the atmosphere

* Radioactive rain: rain that is radioactive due to the presence of radioactive pollutants in the atmosphere