転落
てんらく · tenraku · JLPT N1 · noun
fall
転 = tumble + 落 = drop: tumbling downward, a fall from height or status
The same 落 (raku) appears in 落下 and 落ちる. Use 転落 for falling from a height or sliding into a lower status, such as a fall from power or grace.
落 — grass radical 艹 + 洛 (water 氵 + 各)
Originally written with the grass radical 艹 over 洛, depicting leaves falling from plants. 洛 serves as the phonetic component (giving the luò sound) while 艹 supplies the meaning of vegetation. The sense extended from 'leaves falling' to the general meaning of falling, dropping, or settling down.