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

阿吽の呼吸[aunnokokyuu] the harmonizing, mentally and physically, of two parties engaged in an activity
ちゅうちゅう吸う[chuuchuusuu] to suck
化学吸着[kagakukyuuchaku] chemisorb
吸いこむ[suikomu] to inhale
吸いとる[suitoru] to suck up

吸付く[suitsuku] to stick to
吸う[suu] to smoke
吸引[kyuuin] absorption
吸気[kyuuki] inspiration
吸金剛[kokongou] Hevajra

阿吽の呼吸[aunnokokyuu] the harmonizing, mentally and physically, of two parties engaged in an activity
歓呼[kanko] acclamation
関数呼出し[kansuuyobidashi] function call
呼び回る[yobimawaru] to call out (for someone)
呼び覚ます[yobisamasu] to wake up

呼掛ける[yobikakeru] to call out to
呼寄せる[yobiyoseru] to call
呼起す[yobiokosu] to wake someone (by calling for them)
呼び迎える[yobimukaeru] to send for
呼び込む[yobikomu] to call in

枢機[suuki] important state matters
枢機卿[suukikyou] Cardinal (Catholic)
枢軸[suujiku] axle
枢密[suumitsu] state secrets
枢要[suuyou] importance

中枢[chuusuu] centre
中枢神経系統[chuusuushinkeikeitou] central nervous system
中枢性[chuusuusei] central (nervous system)
枢軸国[suujikukoku] (World War II) Axis powers
中枢神経[chuusuushinkei] central nerves