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

蝶鮫[chouzame] sturgeon (Acipenser mikadoi)
蝶番い[choutsugai] hinge (e.g. on a door)
蝴蝶[kochou] butterfly
蝶蝶[choucho] butterfly
高山蝶[kouzanchou] alpine butterfly

紋白蝶[monshirochou] small cabbage white butterfly (Pieris rapae)
鳳蝶[agehachou] swallowtail butterfly (esp. the citrus swallowtail butterfly, Papilio xuthus)
赤立羽蝶[akatatehachou] red admiral (butterfly)
蝶貝[chougai] silver-lipped pearl oyster (Pinctada maxima)