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

ダムダム弾[damudamudan] dum-dum ammunition
弾機[hatsujou] spring (e.g. coil, leaf)
パイプ爆弾[paipubakudan] pipe bomb
プラスチック爆弾[purasuchikkubakudan] plastic explosive
曳火弾[eikadan] tracer bullet

曳光弾[eikoudan] tracer bullet
円弾[endan] round shot
煙弾[endan] smoke bomb
核弾頭[kakudantou] nuclear warhead
核爆弾[kakubakudan] nuclear weapon