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

海驢[ashika] eared seal (esp. the California sea lion, Zalophus californianus)
驢馬[roba] donkey

驢馬の橋[robanohashi] pons asinorum (hurdle to learning)
驢車[rosha] donkey cart