I am having the worst time with my science fiction manuscript in the terminology and names.
I first called their version of the internet the ethergrid, figuring no one would combine an ethereal term with an abrupt term for something physical. But some years ago a company called their new product the ethergrid. I had to put in a lot of thought on what new word I would use. I finally settled on a word in common use, but which no sane person would use for their product. The common theme here is finding a term that is not copyright or trademarked.
I came up with a fruit called chuppa. But I didn't do my homework before using that in my story. So it turns out there is a fruit called chupa in the Amazon rainforest that looks nothing like the chuppa I describe. Also, it can be a vulgar slang term. So, after a little research, I changed it to a word that some people already use as a harmless slang term.
The name of the planet in my story was Vallannadren, and the inhabitants called Vallannans. But a gamer invented a fantasy land called Vallanna. I could not believe it. A friend suggested I use a name in his family that begins with a V. I was tempted, but decided not to. One might wonder what Finnish people named Härkönen think of the Dune book and movies. So I simply made up a name I can’t find on the internet.
Two hapless ensigns will be sent down to the planet. To humiliate them, their shuttle gets renamed "Space Cadets," and they have to use that as their call sign. But people pretty much agree that Robert Heinlein invented that term.
Now I have to invent some other demeaning term that has not already been taken. Believe it or not, Space Kittens, Space Puppies, Space Pigs, Space Beavers, and Space Unicorns have all been used. (I wouldn’t use Space Unicorns anyway, since they couldn’t handle the controls with their hooves.)
So be careful when creating terms for your invented worlds. All I can say is the internet is your friend for finding out if a word is taken.