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

鶏魚[isagi] chicken grunt (species of fish, Parapristipoma trilineatum)
一番鶏[ichibandori] first cockcrowing
食火鶏[hikuidori] cassowary (Casuarius spp.)
軍鶏[shamo] game fowl
鶏舎[keisha] poultry house

鶏頭[keitou] silver cock's comb (Celosia argentea, esp. crested cock's comb, Celosia argentea var. cristata)
鶏肉[keiniku] chicken meat
鶏鳴[keimei] cocks-crowing
鶏卵[keiran] hens egg