Rain: rain, water falling from the clouds to the ground.

"Shuo Wen Jie Zi" explains the cloud: Water comes out from under the cloud. As the sky is like a cloud, water is idle. All rain belongs to rain.

Han: It means to contain, contain and dive into the water. It can also be used in the name of water.

"Shuo Wen Jie Zi" explains the cloud: Korea has many things.