一触即発[isshokusokuhatsu] critical (touch and go) situation
即く[tsuku] to ascend (the throne)
即ける[tsukeru] to install (a king, emperor, etc.)
色即是空[shikisokuzekuu] form is emptiness
即する[sokusuru] to conform to

即ち[sunawachi] that is
即位[sokui] enthronement
即応[sokuou] compliance
即興[sokkyou] improvisation
即興曲[sokkyoukyoku] impromptu (musical)

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