nutso vs screw loose

nutso

noun
  • Craziness; insanity. 

  • A crazy person; a crackpot or lunatic. 

adv
  • In a crazy manner. 

  • Madly; extremely or obsessively. 

adj
  • Obsessed; overly enthusiastic. 

  • Ridiculous; unbelievable or silly. 

  • Crazy, insane. 

  • Fraught or out of control. 

screw loose

noun
  • A state of insanity or eccentricity. 

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