国
Meaning
Country, state, land
Kunyoumi
くに - kuni
Onyoumi
コク - koku
The Kanji country 国 is a combination of the kanji 玉 (king) and 囗. To remember it, remember that in ancient time, the King of the country always lived in a walled city. So the king 玉 resides inside the walled city 囗, which is a country 国.