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

案内係[annaigakari] clerk at the information desk
因果関係[ingakankei] consequence
外交関係[gaikoukankei] diplomatic relations
勘定係[kanjougakari] cashier
関係[kankei] relation

関係つける[kankeitsukeru] to relate
関係会社[kankeigaisha] affiliated company
関係強化[kankeikyouka] strengthening of relations
関係者[kankeisha] authorized people
求職係[kyuushokugakari] applicant interviewer

亜属[azoku] subgenus
帰属[kizoku] belonging to
貴金属[kikinzoku] precious metal
近縁属[kinenzoku] related genera
金属[kinzoku] metal

金属間[kinzokukan] intermetallic
金属探知機[kinzokutanchiki] metal detector
軍属[gunzoku] civilian in military employ
繋属[keizoku] relationship
係属中[keizokuchuu] pending (e.g. legal case)