Verb fall apart has 4 senses
  1. fall apart, go to pieces - lose one's emotional or mental composure; "She fell apart when her only child died"
    --1 is one way to break down, lose it, snap
    Sample sentence:
    Somebody ----s
  2. break, wear, wear out, bust, fall apart - go to pieces; "The lawn mower finally broke"; "The gears wore out"; "The old chair finally fell apart completely"
    --2 is one way to decay, crumble, delapidate
    Sample sentence:
    Something ----s
  3. crumble, fall apart - break or fall apart into fragments; "The cookies crumbled"; "The Sphinx is crumbling"
    --3 is one way to disintegrate
    Sample sentences:
    Something ----s
    Something is ----ing PP
  4. break, separate, split up, fall apart, come apart - become separated into pieces or fragments; "The figurine broke"; "The freshly baked loaf fell apart"
    --4 is one way to change integrity
    Sample sentence:
    Something ----s