verb

move from a higher to a lower level, typically rapidly and without control.

five inches of snow fell through the night

drop,drop down,plummet,descend,come down,go down,plunge,sink,dive,nosedive,tumble,pitch,cascade,gravitate

noun

an act of falling or collapsing.

his mother had a fall as she alighted from a train

tumble,trip,spill,topple,stumble,slip,collapse,nosedive,header,cropper