Cases of word usage

1) to fall in, give way to pressure (cave)

2) (an) injury or violent shaking or shock (to the brain) as caused by a blow, knock or fall (concussion)

3) (to cause something) to break, rub or fall into very small pieces (crumble)

4) the fall to a lower standard (in morals, art, literature etc) (decadence)

5) abandant and left to fall into ruin (derelict)

6) a heavy fall (of rain etc) (downfall)

7) a heavy fall of rain (downpour)

8) a disease causing a person to fall unconscious with violent involuntary movements (epilepsy)

9) of fall (fell)

10) a short, sudden rush (of wind or fall of rain or snow); nervous hurry (flurry)