Millenarism is a term that refers to a belief system that involves a thousand-year period of peace, prosperity and happiness on Earth. However, there are several synonyms for this term that are used in different contexts. These synonyms include millennialism, chiliasticism and millennianism. Millennialism and chiliasticism are interchangeable terms and refer to the belief in a predicted period of a thousand years. Millennianism, on the other hand, refers to the belief that there will be a better future for mankind in the near future. In each of these belief systems, there is a common thread that ties them together - the hope for a better future for humanity.