捺す[osu] to push
押捺[ounatsu] sealing (document)
転写捺染[tenshanassen] transfer print
捺く[tsuku] to prick

捺印[natsuin] affixing a seal
捺染[nassen] print
署名捺印[shomeinatsuin] sign and seal
指紋押捺[shimonounatsu] fingerprinting

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