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

嘘を吐く[usowotsuku] to tell a lie
嘘吐き[usotsuki] liar (sometimes said with not much seriousness)
弱音を吐く[yowanewohaku] to whine
息を吐く[ikiwotsuku] to take a breath
吐気[hakike] nausea

吐き捨てる[hakisuteru] to spit out
吐き出す[hakidasu] to vomit
吐く[tsuku] to breathe out
吐血[toketsu] vomiting of blood
吐息[toiki] sigh

嘔き気[hakike] nausea
嘔吐[outo] vomiting
嘔吐く[ezuku] to vomit
噴出性嘔吐[funshutsuseiouto] projectile vomiting

嘔気[ouki] nausea
嘔吐反射[outohansha] vomiting reflex
嘔吐中枢[outochuusuu] vomiting center

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