How do you say korea in Japanese?
— 朝鮮 (ちょうせん, 'Chōsen'); (きたちょうせん, Kitachōsen) (かんこく, Kankoku) (ちょうせんはんとう, Chōsen-hantō); 朝鮮

Generic synonyms for korea in Japanese
peninsula半島 (はんとう, hantō)