Seo-Yun

With 35 207 bearers, Seo-Yun is the 3rd most common given name in South Korea (2014 Data).

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Source: https://forebears.io/x/forenames/seo-yun

Seo-Yun, also spelled Seo-yoon, Suh-yoon, or Suh-yun, is also used as a masculine name in Korean. However, it's more common for females. So, I think that the "Gender" of this name should be changed from "Feminine" to "Feminine & Masculine".

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Sources: https://forebears.io/x/forenames/seo-yun
https://forebears.io/x/forenames/seo-yoon
https://forebears.io/x/forenames/suh-yun
https://en.m.wikipedia.org/wiki/Seo-yun

Seo-yun became a popular name for newborn South Korean girls in the early 21st century, coming in fifth in 2008 and 2009, and rising to first in 2015 with 3, 048 out of 211, 403 newborn girls being given the name Seo-yun that year.