Quantum physics is a branch of physics that deals with the behavior of matter and energy at the atomic and subatomic levels. It is based on the principle that energy and matter are not continuous but are instead made up of discrete units called quanta. Quantum physics has led to the development of many important technologies, including lasers, transistors, and nuclear power.

Metaphysics is the study of the fundamental nature of reality. It is concerned with questions such as: What is the nature of consciousness? What is the relationship between mind and body? What is the meaning of life? Metaphysics is not a science in the same way that quantum physics is; it is more of a philosophical inquiry.

Here is a table that summarizes the key differences between quantum physics and metaphysics:

| Feature | Quantum Physics | Metaphysics |

|---|---|---|

| Subject matter | Behavior of matter and energy at the atomic and subatomic levels | Fundamental nature of reality |

| Key principles | Energy and matter are not continuous but are instead made up of discrete units called quanta | Reality is made up of two fundamental substances: mind and matter |

| Methods of inquiry | Scientific experiments and observations | Philosophical reasoning and argumentation |

| Applications | Lasers, transistors, nuclear power | No direct practical applications |

It is important to note that quantum physics and metaphysics are not mutually exclusive. In fact, many physicists and philosophers believe that the two disciplines can be used to complement each other. Quantum physics can provide insights into the physical nature of reality, while metaphysics can provide insights into the philosophical meaning of reality.