Refers to Korea, often in historical or geographical contexts. In modern usage, 韓国 (かんこく) is more common for South Korea, while 朝鮮 is used for the Korean peninsula as a whole or in historical names like 朝鮮半島 (Korean Peninsula) and 朝鮮戦争 (Korean War).
The Korean Peninsula is located in East Asia.
彼は朝鮮の歴史を研究している。
He is researching the history of Korea.
Chinese mugwort; Argy wormwood
globe artichoke