Pantheism is the belief that the universe and nature are all part of a single divine entity. Pantheistical is an adjective that describes anything related to pantheism. Other synonyms that can be used in place of pantheistical include pantheistic, pantheist, and pantheistically. These words are often used interchangeably to describe various aspects of pantheism. Other related terms include animism, which is the belief that everything in nature has a spirit, and naturalism, which is the belief that the natural world is the only reality. No matter which word is used, they all refer to the idea that nature is divine and should be revered.