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

峡谷[kyoukoku] glen
溪谷[keikoku] valley
千仭の谷[senjinnotani] bottomless ravine
谷あい[taniai] valley
谷川[tanigawa] mountain stream

谷底[tanisoko] bottom of valley or ravine
幽谷[yuukoku] deep ravine
蟀谷[komekami] temple (of the forehead)
谷まる[kiwamaru] to terminate