disorganized vs unorganised

disorganized

adj
  • Lacking skills for organizing one's affairs. 

  • Lacking order or organization; confused; chaotic. 

  • In a state of disruption of orderly psychological functioning; engaging in behaviour that is chaotic, self-contradictory, or out of keeping with reality; (of a mental illness) poorly controlled and leading to a disorganized state. 

unorganised

adj
  • Poorly organised, lacking the ability to organise. 

  • Not organised, not having any arrangement. 

How often have the words disorganized and unorganised occurred in a corpus of books? (source: Google Ngram Viewer )