隠密[onmitsu] privacy
過密[kamitsu] overcrowding
確率密度関数[kakuritsumitsudokansuu] probability density function
機密[kimitsu] secrecy
機密性[kimitsusei] confidentiality

機密保護[kimitsuhogo] security (e.g. data, password, etc.)
気密[kimitsu] airtight
気密室[kimitsushitsu] airtight chamber
緊密[kinmitsu] rigour
軍事秘密[gunjihimitsu] military secret

偉挙[ikyo] excellent deeds
一挙[ikkyo] one effort
一挙一動[ikkyoichidou] one's every action
一挙手一投足[ikkyoshuittousoku] slight effort
一挙両得[ikkyoryoutoku] killing two birds with one stone

一斉検挙[isseikenkyo] wholesale arrest
科挙[kakyo] Chinese higher civil service examinations
快挙[kaikyo] brilliant achievement
旗挙[hataage] raising an army
挙げた[ageta] brought up (e.g. topic)

秘露[peruu] Peru
極秘[gokuhi] absolute secrecy
軍事秘密[gunjihimitsu] military secret
厳秘[genpi] strict secret
公然の秘密[kouzennohimitsu] open secret

社外秘[shagaihi] company secret
神秘[shinpi] mystery
神秘学[shinhigaku] occultism (Western)
神秘的[shinpiteki] mysterious
秘める[himeru] to hide

可能選択[kanousentaku] available choice
改選[kaisen] re-election
厳選[gensen] careful selection
互選[gosen] mutual election
公選[kousen] public election

再選[saisen] re-election
再選挙[saisenkyo] re-election
三選[sansen] third-term election
市長選[shichousen] mayoral election
自選[jisen] (author) selection