Gamma rays and X-rays are both forms of electromagnetic radiation, but they are not the same. Here's the key difference:

* Origin: Gamma rays are emitted from the nucleus of an atom, typically during radioactive decay or nuclear reactions. X-rays, on the other hand, are generated when high-energy electrons interact with matter, often in a process called Bremsstrahlung.

Here's a table summarizing the key differences:

| Feature | Gamma Rays | X-rays |

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

| Origin | Nucleus | Electron interactions |

| Energy | Higher | Lower |

| Wavelength | Shorter | Longer |

| Penetrating Power | Higher | Lower |

| Typical Uses | Medical imaging, sterilization, cancer therapy | Medical imaging, airport security, materials analysis |

In short:

* Gamma rays are higher energy, have shorter wavelengths, and are more penetrating than X-rays.

* X-rays are lower energy, have longer wavelengths, and are less penetrating than gamma rays.

While there's a distinction between the two, their energy ranges can overlap, making it difficult to categorize some radiation.