wackadoodle vs wingnut

wackadoodle

noun
  • A crazy, irrational, or eccentric person. 

adj
  • Crazy, irrational, or eccentric. 

wingnut

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

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

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

  • A mentally ill homeless person. 

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

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