"Planes of Existence" refer to different levels or dimensions of reality that are often discussed in philosophy, spirituality, and metaphysics. These planes can represent various states of being, consciousness, or existence, ranging from the physical world we inhabit to higher spiritual realms. Each plane is thought to have its own unique characteristics and rules. In many belief systems, such as Buddhism or Hinduism, these planes are often categorized into layers, with the material world being the lowest and more ethereal or divine realms being higher. Understanding these planes can help individuals explore concepts of life, death, and the nature of the universe.