This is the 10006th most frequent Japanese word.
転落
"Fall; decline; tumble."
In this sentence, '転落' is used to describe a physical fall from a high place, which is its basic meaning.
彼は崖から転落して怪我をしました。
He fell from a cliff and got injured.
Here, '転落' conveys a figurative meaning of experiencing failure or decline.
彼女の計画は、大きな転落を迎えた。
Her plan met a significant downfall.
'転落' here again bears a figurative nuance, showing a sudden decline in life circumstances or status.