maladjustment vs personality disorder

maladjustment

noun
  • The inability to adapt oneself to the needs of others, or to the stresses of normal life. 

  • A poor or faulty adjustment, especially of a mechanism. 

personality disorder

noun
  • Any of a class of mental disorders characterized by ongoing rigid patterns of thought and action. 

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