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

医療輸送機[iryouyusouki] medical transport (plane)
一籌を輸する[icchuuwoyusuru] to be inferior to
運輸[unyu] transportation
運輸省[unyushou] Ministry of Transport
運輸相[unyushou] Transport Minister

運輸大臣[unyudaijin] Minister of Transport
逆輸入[gyakuyunyuu] reimportation
禁輸[kinyu] embargo
空輸[kuuyu] air transport
軍事輸送[gunjiyusou] military transport