臥薪嘗胆[gashinshoutan] going through thick and thin to attain one's objective
薪水[shinsui] fuel and water
薪炭[shintan] wood and charcoal
薪拾い[takigihiroi] firewood gathering

薪割[makiwari] hatchet
薪能[takiginou] noh theater performed at night by a fire
薪小屋[makigoya] woodshed

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