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

御手盛り[otemori] making arbitrary decisions which benefit oneself
いたずら盛り[itazurazakari] mischievous age
人生の真っ盛り[isshounomassakari] the noontide of life
一盛り[hitosakari] temporary prosperity
一盛り[hitomori] pile

栄枯盛衰[eikoseisui] ups and downs of life
旺盛[ousei] full of vim and vigor
花盛り[hanazakari] flowers in full bloom
勤め盛り[tsutomezakari] the prime of one's career
最盛期[saiseiki] golden age