This document contrasts utopias and dystopias. It defines a utopia as an ideally perfect place or unrealistic ideal scheme, while a dystopia is an imaginary place where life is extremely bad due to deprivation, oppression, or terror. It then provides examples of different types of utopias, including ecological, economic, political, religious, and science/technology utopias. In contrast, it lists varieties of dystopias such as those relating to society, social groups, nature, politics, and economics, and provides characteristics typical of each type of dystopia.