God means different things to different people, from one that watches everything you do, to one that maybe is a force out there, like gravity.

A physical force like gravity? Why refer to it as a god then?

Here's another belief http://en.wikipedia.org/wiki/Pantheism

Why call it God? Because it means different thing to different people and no on owns the word. http://en.wikipedia.org/wiki/God#Other_concepts