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

共産党中央委員会[kyousantouchuuouiinkai] Central Committee of the Communist Party
震央[shinou] epicentre (of an earthquake)
中央[chuuou] centre
中央アジア[chuuouajia] central Asia
中央委員会[chuuouiinkai] central committee

中央計画[chuuoukeikaku] centralized planning
中央口[chuuouguchi] central entrance
中央集権[chuuoushuuken] centralized authoritarian rule
中央集権化[chuuoushuukenka] centralization of power
中央処理装置[chuuoushorisouchi] central processing unit

威権[iken] authority
永子作権[eikosakuken] perpetual land lease
永住権[eijuuken] permanent residence
越権[ekken] going beyond authority
王権[ouken] royalty

権殿[gonden] temporary shrine (houses the object in which the deity resides when main shrine is under repairs)
加入権[kanyuuken] NTT permission-to-procure-a-phone-line
既得権[kitokuken] vested rights
棄権[kiken] abstaining from voting
棄権者[kikensha] non-voter

ゴミ集積場[gomishuusekijou] village garbage collection point
英字集合[eijishuugou] alphabetic character set
家集[kashuu] poet's poetical works
歌集[kashuu] anthology
画集[gashuu] book of paintings in print

会集[kaishuu] audience
解集合[kaishuugou] set of solutions
寄集め[yoseatsume] mish-mash
寄せ集める[yoseatsumeru] to put together
寄り集まる[yoriatsumaru] to gather together