They say English is hard to grasp for those for whom it is not their mother tongue... take the word 'fall' appropriate for this Autumnal season and you will understand why...
Fall for - be captivated or deceived by
Fall about - be helpless - usually with mirth
Fall out - quarrel; leave ranks; airborne radioactive substance from nuclear explosion
Fall through - fail to obtain or reach a goal; unplanned descent
Fall down - not stay upright, collapse
Fall Guy - easy victim, scapegoat
Fall on - fail; assault; come across hard times; get lucky; kill oneself
Fall in - take place in line; collaborate with others; begin a conversation;lapse or revert; a specified state
Fall foul of - come into collision with; quarrel with
Fall off the wagon - take up a bad habit/vice once again
Fall short - be shortof, or not have sufficient; not reach intended target/market/goal
Fall from grace - lose favor or popular status; act in a way that loses respect of others
Fall behind - lag, tarry to the rear; slip backwards; or... the expansion of the gluteous maximus from too much sitting around after Thanksgiving.....