What's the difference between paranoid delusions and anxiety?

Anxiety vs paranoia: Someone suffering from paranoid delusion is convinced that what they believe is true in spite of all evidence to the contrary. They cannot be talked out of their delusion nor can they be comforted. Someone with anxious thoughts is usually fretting the future in spite of the fact that what they are fearing is unlikely to happen. They do not argue with that lack of likelihood, but will complain that they cannot control their thoughts.