揮発[kihatsu] volatilization
揮発性[kihatsusei] volatile
揮発度[kihatsudo] volatility
揮発物質[kihatsubusshitsu] volatile substance
揮発油[kihatsuyu] gasoline

指揮[shiki] command
指揮官[shikikan] commander
指揮者[shikisha] (musical) conductor
指揮所[shikijo] command post
指揮所演習[shikijoenshuu] command post exercise

威張り散らす[ibarichirasu] to domineer
胃散[isan] stomach medicine
逸散に[issanni] at top speed
一目散[ichimokusan] at full speed
一目散に[ichimokusanni] at full speed

雲散霧消[unsanmushou] vanishing like mist
解散[kaisan] breakup
拡散[kakusan] scattering
閑散[kansan] deserted (esp. store, market, town, streets)
言散らす[iichirasu] to spread (a report)