What are the differences than?
These are the differences according to multiple veterans (literary the OG inventors of them…) of Sci fi and Fantasy writing. As well as definitions available on every library as well as Wikipedia and other available sources. We are just supposed to take your word over the proven professionals?
What are your qualifications other than self pronounced author? Usually when someone just interjects that they are lawyer, or a doctor, or other professional, without providing a detailed response, is just making stuff up.
Because the difference surely isn’t “it has spaceships”, that’s a gross oversimplification.