Word Paranoia originates from Greek word Παράνοια (Paránia which means the same thing as in English. The word composed from the verb νοώ (noó which means I think) and the first synthetic para. Para is something close but not the same. So when you think things that are not real but seem real you have Paranoia. Other words with Para- are parallel, paraphrase etc.
Definition of Paranoia
Mental disorder which the person is dellusional.
