Existence refers to the state or quality of being alive, present, or existing. It encompasses the overall being and presence of something, whether it is a living being, an object, or an abstract concept. Existence implies the fact of being real and having a tangible or intangible form. It involves the fundamental existence of everything that makes up our physical world, including humans, animals, plants, and inanimate objects. Existence is also commonly tied to philosophical concepts and debates, such as the nature of reality, consciousness, and the underlying purpose or meaning of life.