Here's a breakdown of the terms:

* Precipitation: This is the general term for any form of water that falls from the atmosphere to the Earth's surface. This includes rain, snow, sleet, and hail.

* Rain: This refers specifically to liquid precipitation.

* Rainwater: This is the specific term for rain after it has hit the ground.

So, to answer your question, rainwater before it hits the ground is still considered precipitation, specifically in the form of rain.