The following article explains a little more about the water cycle, in which water circulates from the land to the air in a continuous cycle.
When the heat of the sun causes water to turn to water vapor, it is known as evaporation.
As the water vapor moves higher in the atmosphere, it cools down due to a decrease in the temperature. On cooling, the water vapor condenses to form tiny droplets of water. This process is known as condensation.
The tiny droplets of water that are formed as a result of condensation keep on accumulating in the clouds. When a cloud can no longer accommodate any more water droplets, the water is released from them in the form of rain, hail, sleet, or snow.
The water that falls back to the surface of the earth either stays on the surface of the earth, or flows off the surface into water bodies like rivers, lakes and reservoirs. This flow is termed as run-off.
Plants absorb water from the soil and transport it to the leaves via the stem. When this water evaporates from the leaves and stem, it is termed as transpiration.
When the water on the surface of the earth seeps down the ground, it is called percolation or infiltration. It later forms aquifers in low-lying regions.