to fall as if dancing; to flutter down

many trees

to dance / to twirl; to rotate or spin / (archaic or in fixed compounds) to keep moving; to move continuously

defoliation, the shedding of leaves / scattered leaves, leaves that have fallen from a tree

to shed leaves

park

落ちる: to fall

to fall / (computing) to go down (as when a computer or application becomes unresponsive) / (electrical engineering, of a circuit breaker) to trip / (informal) to fail an examination

to dance

deciduous forest