韓国[kankoku] (South) Korea
韓国語[kankokugo] Korean (language)
韓国人[kankokujin] Korean person
韓人[kanjin] Korean person
在韓米軍[zaikanbeigun] US troops stationed in (South) Korean

三韓[sankan] Korea
新韓国党[shinkankokutou] New Korea Party
大韓航空[taikankoukuu] Korean Airways
日中韓[nicchuukan] Chinese, Japanese and Korean (usu. characters, etc.)
日中韓越[nicchuukanetsu] Chinese, Japanese, Korean and Vietnamese (usu. characters)