Concepts in metaphysics

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Metaphysics is a branch of philosophy exploring the fundamental questions, including the nature of concepts like being, existence, and reality. It has two branches – cosmology and ontology. Traditional metaphysics seeks to answer, in a "suitably abstract and fully general manner", the questions:

1. What is there?
2. And what is it like?

Topics of metaphysical investigation include existence, objects and their properties, space and time, cause and effect, and possibility. A central branch of metaphysics is ontology, the investigation into the basic categories of being and how they relate to one another.