Thinking about surnames. There seem an infinite number around the world, but in China there are only five-ish.
Another random thought. The family name Donjon is extremely rare in the United States, but it's very common in France. It's the word for a castle tower or keep. It's where we get our word dungeon. A tower and a basement are very different things, but that's how cognates sometimes work. #Genealogy
@poemblaze IIRC, they're about 25 years from just one in Japan or Korea.
@EnochianEntropy IIRC?