充填[juuten] fill (up)
装填[souten] charge
填める[uzumeru] to cover
填める[hameru] to insert
填め込む[hamekomu] to inlay

填る[hamaru] to fit
補填[hoten] compensating
填補[tenpo] supplementation
填り役[hamariyaku] well-suited role
填隙[tengeki] caulking

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