Nonexistence refers to the state of not existing or being absent. It is a philosophical concept that explores what it means for something to be real or to have presence. In discussions about existence, nonexistence often serves as a contrast, helping to define and understand the nature of being. In various fields, such as philosophy and theology, nonexistence raises questions about the nature of reality and the universe. For instance, debates about the existence of God or alternate dimensions often involve considerations of what it means for something to not exist.