Here's a Euler diagram on planets, dwarf planets, minor planets, so on and so forth from Wikipedia [1]. Alan Stern, who coined the term "dwarf planet," initial

Here's a Euler diagram on planets, dwarf planets, minor planets, so on and so forth from Wikipedia [1]. Alan Stern, who coined the term "dwarf planet," initially wanted it to be under the umbrella of planet as a distinct subtype. [2] The International Astronomical Union (IAU), however, believed that what we call a dwarf planet — it was referred to as a planetoid — should not be considered a type of planet. The IAU later held a session where they decided to use the term dwarf planets in place of planetoids, however they decided that a dwarf planet is not a type of planet. It's semantically inconsistent, but that's where we stand right now per the IAU. [1] https://upload.wikimedia.org/wikipedia/commons/f/fc/Euler_diagram_of_solar_system_bodies.svg https://upload.wikimedia.org/wikipedia/commons/f/fc/Euler_di... [2] https://en.wikipedia.org/wiki/Dwarf_planet https://en.wikipedia.org/wiki/Dwarf_planet