Noun break down has 4 senses
  1. dislocation, breakdown - the act of disrupting an established order so it fails to continue; "the social dislocations resulting from government policies"; "his warning came after the breakdown of talks in London"
    --1 is a kind of disruption, perturbation
    Derived form: verb break down2
  2. breakdown, crack-up - a mental or physical breakdown
    --2 is a kind of collapse
    --2 has particulars: nervous breakdown
    Derived forms: verb break down3, verb break down8
  3. breakdown, equipment failure - a cessation of normal operation; "there was a power breakdown"
    --3 is a kind of failure
    --3 has particulars:
     brake failure; engine failure; misfire, dud; outage; power outage, power failure; fault
    Derived form: verb break down4
  4. breakdown, partitioning - an analysis into mutually exclusive categories
    --4 is a kind of analysis, analytic thinking
    --4 has particulars: resolution, resolving
    Derived form: verb break down1
,Verb break down has 8 senses
  1. analyze, analyse, break down, dissect, take apart - make a mathematical, chemical, or grammatical analysis of; break down into components or essential features; "analyze a specimen"; "analyze a sentence"; "analyze a chemical compound"
    Derived form: noun breakdown4
    Sample sentence:
    Somebody ----s something
  2. break down, crush - make ineffective; "Martin Luther King tried to break down racial discrimination"
    --2 is one way to change, alter, modify
    Derived form: noun breakdown1
    Sample sentences:
    Somebody ----s something
    Something ----s something
  3. break down, lose it, snap - lose control of one's emotions; "When she heard that she had not passed the exam, she lost it completely"; "When her baby died, she snapped"
    --3 is one way to act, behave, do
    Derived form: noun breakdown2
    Sample sentence:
    Sam and Sue break down
  4. fail, go bad, give way, die, give out, conk out, go, break, break down - stop operating or functioning; "The engine finally went"; "The car died on the road"; "The bus we travelled in broke down on the way to town"; "The coffee maker broke"; "The engine failed on the way to town"; "her eyesight went after the accident"
    --4 is one way to change
    Derived form: noun breakdown3
    Sample sentence:
    These cars won't break down
  5. decompose, break up, break down - separate (substances) into constituent elements or parts
    --5 is one way to separate
    Sample sentences:
    Somebody ----s somebody
    Something ----s something
  6. crumble, crumple, tumble, break down, collapse - fall apart; "the building crimbled after the explosion"; "Negociations broke down"
    --6 is one way to change integrity
    Sample sentence:
    Something ----s
  7. break down - cause to fall or collapse
    --7 is one way to
    break, bust
    Sample sentence:
    They want to break down the doors
  8. break down, collapse - collapse due to fatigue, an illness, or a sudden attack
    --8 is one way to suffer, sustain, have, get
    Derived form: noun breakdown2
    Sample sentence:
    Sam and Sue break down
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