渓谷

While 'valley' is a broad term, 渓谷 is a specific type of valley – a deep, narrow one. Not all valleys are 渓谷.

Canyon is a very close match for 渓谷, especially '峡谷'. However, 渓谷 can also refer to slightly less grand 'gorges' or 'ravines'.

Gorge is a near-perfect synonym for 渓谷, but some learners might confuse it with broader 'valleys' or smaller 'gullies'.

Often translated as 'valley' or 'gorge.' While 渓谷 is a type of 谷, 谷 is much broader and can refer to any depression in the land.

渓谷 (keikoku) specifically means a deep, narrow valley often with a river, like a ravine or canyon. 谷 (tani) is a general term for a valley, which can be wide or shallow.

山を越えて、美しい谷に着いた。 (Yama o koete, utsukushii tani ni tsuita.) - We crossed the mountains and arrived at a beautiful valley. / 渓谷の底には清らかな川が流れている。 (Keikoku no soko ni wa kiyorakana kawa ga nagareteiru.) - A clear river flows at the bottom of the ravine.

Very similar to 渓谷, both referring to deep valleys. The distinction is subtle and often interchangeable in casual conversation.

峡谷 (kyōkoku) tends to imply a larger, grander scale, often with steeper sides, like a canyon. 渓谷 (keikoku) can be a bit more general for a ravine or gorge, not necessarily as massive as a canyon.

グランドキャニオンは壮大な峡谷だ。 (Gurando Kyanion wa sōdaina kyōkoku da.) - The Grand Canyon is a magnificent canyon. / その渓谷はハイキングに最適だ。 (Sono keikoku wa haikingu ni saiteki da.) - That ravine is perfect for hiking.

Sometimes translated as 'mountain stream' or 'glen,' which can have similar geographical features to a small ravine.

沢 (sawa) specifically refers to a mountain stream or a small valley where a stream flows. It's more about the water and the immediate surroundings of a stream, while 渓谷 focuses on the deep, steep-sided landform.

沢の音を聞きながら歩いた。 (Sawa no oto o kikinagara aruita.) - I walked while listening to the sound of the stream. / 渓谷には多くの滝があった。 (Keikoku ni wa ooku no taki ga atta.) - There were many waterfalls in the ravine.

Can mean a 'ditch' or 'gully,' which are smaller, man-made or natural depressions that might be confused with a very small ravine.

溝 (mizo) is typically smaller and less grand than 渓谷. It often refers to a ditch, drain, or a small natural gully, not a large, deep geological feature.

雨水が溝に流れ込んでいる。 (Amamizu ga mizo ni nagarekondeiru.) - Rainwater is flowing into the ditch. / その渓谷は数千年かけて形成された。 (Sono keikoku wa sūsen-nen kakete keisei sareta.) - That ravine was formed over thousands of years.

Meaning a 'crevice' or 'fissure,' which are also deep, narrow openings in the earth.

裂け目 (sakeme) implies a crack or split, often quite narrow and sometimes in rock or ice. 渓谷 (keikoku) is a much larger, more expansive geological formation carved out by erosion, typically with a river at its base.

岩に大きな裂け目がある。 (Iwa ni ookina sakeme ga aru.) - There's a big crevice in the rock. / 渓谷の美しさに息をのんだ。 (Keikoku no utsukushisa ni iki o nonda.) - I gasped at the beauty of the ravine.