basket case vs wingnut

basket case

noun
  • Someone (especially a soldier) who has lost all four limbs. 

  • An institution or country in a bad condition or difficult situation (economically, financially or otherwise). 

  • One made powerless or ineffective, as by nerves, panic, stress or exhaustion; someone considered mentally unstable. 

wingnut

noun
  • A member of the air force (in a town that hosts a USAF installation). 

  • Someone with crazy or extreme political views (especially extreme conservative views). 

  • Someone perceived as odd, eccentric, and/or extreme. 

  • A mentally ill homeless person. 

  • A deciduous tree of the genus Pterocarya native to Asia. 

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