The water cycle begins with the sun, the sun will evaporate the water and turns into a gas this is what we call evaporation.
After that the gas will turn in to little particles then it forms into a cloud we call it constitution.
When it turns into a cloud the particles get bigger then it rains or it snows this is what we call precipitation.
After that precipitation that did not get absorbed into the soil, or did not evaporate, and therefore, made its way from the ground surface into places that water collect.It causes erosion, and also carry chemicals and substances on the ground surface along to the rivers where the water ends up. And this is what we call the Runoff.
And after all of that the water will be collected by the water and it is in the ocean again this is what we call collection.