You are kind of right that they share the same concept, but not in the way you think. For atheists, accountability has to do with what is natural, and paganists have their belief in what they can see in the nature. So both is relying on nature, but that's where it stops. Still - both have full accountability. The people that lack accountability is the ones that are theists. Because their accountability is against a deity and not other people, a nation of people that are accountable to a deity cannot become a proper democracy, because they'll base their action on the deity.  