An organized (or disorganized) group (or single individual) that believes (or disbelieves) in supernatural (or mundane) forces (or . . . um . . . not-forces?) that may (or may not) or may not (or may) exist (or not) 1). These are usually quite confusing, as demonstrated by this description.
Through a recent agreement between religious representatives 6)7) 8) , all inter-religious wars have been cancelled. This is what's known as a Gentleman's Agreement.