Norms vs Beliefs

I still am confused about the differences between Norms and Beliefs. To get a better grasp on the difference I looked on wikipedia and the definition of Norm is the sociological term for the behavioural expectations and cues within a society or group. They have been defined as "the rules that a group uses for appropriate and inappropriate values, beliefs, attitudes and behaviors. This definition confused me more because it seems if I am correct that Norms help define Beliefs.