Rain is water that falls from the sky. It happens when clouds get heavy with water drops. People see and feel rain when they go outside.
The rain is very strong today.
I like to walk in the rain.
To rain means water comes down from the sky in drops. We use this word to say when the weather sends water down. It is a normal verb for weather.
It rains a lot in spring.
The water rained down fast.
Rain can mean many things falling fast from above. This is often used in war or danger, like bullets or stones falling quickly.
The soldiers faced a rain of bullets.
There was a rain of stones from the wall.
Rain can mean to send many things fast to someone. It is used when many things like praise or gifts come suddenly. This use is often metaphorical.
The stars rained praise on her work.
Fans rained gifts on the singer.
Rain is used to describe many things coming at once, not just water. People say 'a rain of complaints' or 'a rain of questions' to show many things come together fast.
There was a rain of complaints after the show.
A rain of questions came from the crowd.
To rain means to throw or attack with many things quickly. This is used especially in military or conflict situations to describe heavy attacks.
The city rained bombs on its enemies.
They rained stones on the soldiers.