御中[onaka] stomach
御話中[ohanashichuu] busy (phone)
アル中[aruchuu] alcoholism
π中間子[paichuukanshi] pi meson
暗中[anchuu] in the dark

暗中摸索[anchuumosaku] groping in the dark
意中[ichuu] one's mind
意中の女[ichuunoonna] sweetheart
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一日中[ichinichijuu] all day long

御誕生日おめでとうございます[otanjoubiomedetougozaimasu] Happy Birthday
また明日[mataashita] see you tomorrow
旭日[kyokujitsu] rising sun
旭日昇天[kyokujitsushouten] full of vigor and vitality (like the rising sun) (vigour)
或日[aruhi] one day (e.g. "one day while studying, ..")

一日の長[ichijitsunochou] superiority
一日一日[ichinichiichinichi] gradually
一日一夜[ichinichiichiya] all day and night
一日増しに[ichinichimashini] day by day
一日置き[ichinichioki] every other day

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)