We have 2 questions tagged starships. We also have 16 tagged spaceship.
It seems that there's very little point to have a specific tag for "starships" - The only meaningful distinction would be if the former explicitly applied to inter-star travel and the latter to space travel within one system as contrast, but that isn't supported by either exact English connotations, nor the set of 16 questions for spaceship.
I proposed to change starships to be a synonym of spaceship.
While at it, starship should also be changed thusly, but it doesn't yet exist and you can't propose a synonym based on non-existing tag.
If you agree, and have >=5 upvotes in spaceship, please feel free to up-vote the synonym suggestion here: https://scifi.stackexchange.com/tags/spaceship/synonyms
If approved, I will take care of minor re-tagging if it will be necessary.
Suggested synonym/retag: rename “sorcery” to “magic”