改善[kaizen] betterment
勧善懲悪[kanzenchouaku] rewarding good and punishing evil
勧善懲悪劇[kanzenchouakugeki] morality play
偽善[gizen] hypocrisy
偽善者[gizensha] hypocrite

最善[saizen] the very best
慈善[jizen] charity
慈善家[jizenka] charitable person
慈善会[jizenkai] philanthropic society
慈善市[jizenichi] charity bazaar

最も[mottomo] most
最愛[saiai] beloved
最悪[saiaku] the worst
最下位のビット[saikainobitto] least significant bit
最外[saigai] outer-most

最寄[moyori] nearest
最期[saigo] one's last moment
最強[saikyou] strongest
最近[saikin] most recent
最恵国待遇[saikeikokutaiguu] most favored nation

テロ対策[terotaisaku] anti-terrorist
マーケティング策略[maaketingusakuryaku] marketing tactic
リストラ策[risutorasaku] restructuring scheme
悪策[akusaku] poor policy
安全対策[anzentaisaku] safety measure

一策[issaku] idea
下策[gesaku] poor plan
劃策[kakusaku] plan
解決策[kaiketsusaku] solution
奇策[kisaku] clever scheme