Every time I see information about South Korea, I notice a lot of "Dongs": Myeong-dong, Insadong, Samcheong-dong, Seocho-dong, Gangnam-dong, etc. These are not mountain caves, water caves, or tree holes...
In the Korean "Chinese Character Dictionary," it is explained this way:
"Dong" has "氵" on the left, which means "water." Combined with "同" on the right, it indicates "a place with water," and in ancient times, it was extended to mean "village." Nowadays, the Korean "dong" refers to "street" and has no relation to the Chinese term for "cave."
In South Korea, there are more than 2,000 dongs nationwide, and Seoul alone has 522, among which the most famous is undoubtedly Myeong-dong in Seoul.