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

粗っぽい[arappoi] rough
粗木[araki] logs in bark
骨粗しょう症[kotsusoshoushou] osteoporosis
粗漏[sorou] careless
粗い[arai] coarse

粗い細工[araisaiku] rough workmanship
粗い肌[araihada] rough skin
粗い網[araiami] coarse net
粗悪[soaku] coarse
粗悪品[soakuhin] inferior goods