一封[ippuu] sealed letter
開封[kaifuu] unsealed letter
完封[kanpuu] complete blockade (seal)
旧封[kyuuhou] former fief
厳封[genpuu] sealing hermetically

言論を封殺する[genronwofuusatsusuru] to suppress the freedom of speech
御封[gofu] talisman
再封鎖[saifuusa] reblocking
三封[sanpuu] forced out on third
全封地[zenhouchi] the whole fief

ブチ殺す[buchikorosu] to kill by hitting
押殺す[oshikorosu] to crush to death
あっ殺[assatsu] crushing to death
暗殺[ansatsu] assassination
暗殺事件[ansatsujiken] assassination

一殺那[issetsuna] (a) moment
殴り殺す[nagurikorosu] to strike dead
殴殺[ousatsu] beating to death
皆殺し[minagoroshi] massacre
かみ殺す[kamikorosu] to stifle a smile, yawn, etc.