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

閾値[ikichi] threshold (amount, dose, etc.)
識閾[shikiiki] threshold of consciousness
閾下[ikika] subliminal (below the threshold of sensation or consciousness)
閾刺激[ikishigeki] threshold stimulus

検知閾値[kenchiikichi] detection threshold
痛覚閾値[tsuukakuikichi] pain threshold
閾値下[ikichika] subliminal