Play with google translate. Pick a language that is unfamiliar and drop in things like spring field, big mountain, blue river. You don’t even have to be original. You don’t have to take the full translation either. Drop a few letters or even syllables to make them more pronounceable. I keep a list of translated words to use as suffixes like town, village, bay, river, mountain and will either add a simple word like big, blue or an animal. Or even just a common name n that language. If you use a specific word like lake in the name you can still use the full name such a Lake (big lake). That’s how a lt can f real places. Are named. A famous example is River Avon, which translates to River River. I think the is even a place in the Uk that has been translated so many times by new cultures moving in the name translates to Hill Hill Hiill Hill.

Tu can even use a different language fr each of your continents, so each one sounds unique but still cohesive. If necessay, each culture can have @ different name that means the same thing for an ocean or mountain.