に就て[nitsuite] concerning
に就き[nitsuki] because of
去就[kyoshuu] committing one's self
就いては[tsuiteha] in line with this
就きましては[tsukimashiteha] in line with this

就く[tsuku] to ascend (the throne)
就ける[tsukeru] to install (a king, emperor, etc.)
就学[shuugaku] entering school
就学義務[shuugakugimu] compulsory school attendance
就学児童[shuugakujidou] school child

一睡り[hitonemuri] (usu. in positive sentences) (a) sleep
一睡[issui] (usu. in negative sentences) (not) a wink of sleep
午睡[gosui] nap
昏睡[konsui] lethargy
こん睡状態[konsuijoutai] lethargic state

熟睡[jukusui] sound sleep
睡眠[suimin] sleep
睡眠剤[suiminzai] sleeping tablet
睡眠不足[suiminbusoku] lack of sleep
睡眠薬[suiminyaku] sleeping pill