Fall about
Laugh a lot
Fall apart
Break into pieces
Fall back
Retreat
Fall back on
Be able to use in an emergency
Fall behind
Make less progress
Fall down
Fall on the ground
Fall for
Be attracted to somebody, fall in love
Fall in
Collapse
Fall into
Start doing something unplanned
Fall off
Decrease
Fall out
Argue and be on bad terms with someone
Fall over
Fall on the ground
Fall through
Be unsuccessful
Fall under
Become controlled