a person who believes in god is a believer a person who does not believe in god is an atheist a person who does not know if there is a god or not is an agnostic

I think the theist/atheist distinction goes even deeper i.e. that theism is a belief is a creator god, atheism is lack of belief in a creator god. Agnosticism is about knowing that we can never actually be certain. It's not whether a person knows or doesn't know -- agnostics assert that humans just can't ever be certain. Agnosticism is that the truth will always elude us...there are limits to what our senses can tell us or what our minds can conclude from the available evidence. (at least, that's my limited perspective...)

1. theist 2. atheist 3. agnostic

normal man

beliver