峡谷|きょうこくkyoukoku[0]heiban (flat)

1. noungorge; ravine; canyon; glen

• Synonym渓谷けいこくNeutralA valley with a stream running through it, often scenic — as in 「渓谷美」; 「峡谷」 stresses steep, narrow cliffs on both sides.
• Related峡かいWrittenWritten/formal prose; a narrow valley between mountains, used mostly as a combining form in words like 「海峡」「山峡」.
• Antonym平原へいげんNeutralA flat, broad plain — the opposite of the narrow, steep-sided valley that 「峡谷」 denotes.

Use 「峡谷」 for a deep valley with steep cliffs on both sides, as in 「グランドキャニオン大峡谷」; 「渓谷」 for a scenic valley with a clear stream; 「平原」 for a plain.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 切り立きりたった崖がけなどに挟はさまれた狭せまい谷たに。キャニオン。