Re: Translation of Korean language. 朝鮮語 or 韓國語 ?
I am not familiar with Japanese; please coordinate with Japanese Debian Developers to ensure the translation is correct. Please do not make changes until you get an ACK from Japanese developers/speakers. Feel free to seek help on Debian's Japanese l10n mailing list.
P.S. As a native Chinese speaker, both usage are understandable but the former (original) one occurs more often. Chinese is different from Japanese, though.