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

緩衝[kanshou] buffered
緩衝器[kanshouki] shock absorber
緩衝地帯[kanshouchitai] buffer zone
刺衝[shishou] stabbing
衝撃[shougeki] shock

衝撃波[shougekiha] shock wave
衝動[shoudou] impulse
衝動行為[shoudoukoui] shock action
衝動買い[shoudougai] impulsive buying
衝突[shoutotsu] collision