sociopathic vs with a screw loose

sociopathic

adj

  • Having the characteristics of a sociopath. 

  • Unconcerned about the adverse consequences of one's actions on others. 

noun

  • A sociopath. 

with a screw loose

How often have the words sociopathic and with a screw loose occurred in a corpus of books? (source: Google Ngram Viewer )