The story
- Korean · borrowed from함경(咸鏡)
- English todayHamgyong
An improper simplification of the McCune-Reischauer romanization Hamgyŏng of Korean 함경(咸鏡) (Hamgyeong), from its one-time principal cities Hamhung and Kyongsong.
Etymology from Wiktionary, CC BY-SA 4.0.