海峡[kaikyou] channel (e.g. between two land masses)
峡谷[kyoukoku] glen
峡部[kyoubu] isthmus
峡湾[kyouwan] fjord
山峡[sankyou] gorge

台湾海峡[taiwankaikyou] Straits of Taiwan
地峡[chikyou] isthmus
間宮海峡[mamiyakaikyou] strait between Sakhalin and the east coast of Siberia
英仏海峡[eifutsukaikyou] the English Channel
峡間[kyoukan] between the mountains

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