嗣ぐ[tsugu] to succeed (someone in a business or inheritance)
継嗣[keishi] successor
後嗣[koushi] heir
嗣子[shishi] heir
嫡嗣[chakushi] legitimate heir

天津日嗣[amatsuhitsugi] imperial throne
世嗣[yotsugi] heir
養嗣子[youshishi] adoptive heir
皇嗣[koushi] Crown Prince
皇帝の嗣[kouteinoshi] Emperor's heir

お生憎様[oainikusama] that's too bad (ironical)
御誕生日おめでとうございます[otanjoubiomedetougozaimasu] Happy Birthday
隣の芝生は青い[tonarinoshibafuhaaoi] the grass is always greener on the other side
生きがいい[ikigaii] fresh (e.g. fish)
コンピューター援用生産[konpyuutaaenyouseisan] computer-aided manufacture

委託生[itakusei] scholarship student sent by government office or business
生す[nasu] to build up
異常発生[ijouhassei] plague
医学生[igakusei] medical student
医学生物学[igakuseibutsugaku] medical biology