Not necessarily, it includes instances like Zonama Sekot from Star Wars Legends where they strapped huge engines onto an actual planet.
A spaceship made of a planet is indeed also a spaceship the size of a planet, but I don't think it's a good idea for both the title and the page image to suggest that's the only thing it refers to.
ERROR: The current state of the world is unacceptable. Save anyway? YES/NOHmm... not using planet shaped space ships kinda limits options, but here's a couple:
Galactus' spaceship.
The ID4:R ship might work, but that's not a great angle, it's a little too hard to tell it isn't just a really big construction attached to the planet.
Another idea:
Edited by StarSword on Feb 27th 2022 at 11:36:11 AM
Trust me, I'm an engineer!This
could also work. I'll message the creator to see if we can get permission.

Update on permission for 9: No response on either DA or Facebook (the artist does not appear to have been active on DA since 2018 or so). I just sent an email to the artist's posted Gmail account.
Edited by StarSword on Mar 7th 2022 at 1:23:06 PM
Trust me, I'm an engineer!
Crown Description:



Carryover from the recently concluded discussion
of Planetary Relocation. This image was just removed, and it was suggested that it might be a better image for Planet Spaceship than the current.
The current image, of the Magog Worldship, is clearly a megastructure involving planets and a star, but it's hard to tell that it's a self-propelled megastructure:
Previous Image Pickin discussion: https://tvtropes.org/pmwiki/posts.php?discussion=1362244116047814000
Edited by StarSword on Feb 27th 2022 at 9:04:56 AM
Trust me, I'm an engineer!