What does 盆地 mean?
盆地 is a Japanese noun meaning “basin (e.g., between mountains)” in English. It is written as 盆地 in kanji, ぼんち in hiragana, and bonchi in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
河川の盆地には普通肥沃な農地がある。
The basin of a river usually has rich farmland.