screwball vs wack

screwball

noun
  • One who behaves in a crazy manner. 

  • A pitch thrown with added pressure by the index finger and a twisting wrist motion resulting in a motion to the right when thrown by a right-handed pitcher. 

adj
  • Crazy, offbeat, bizarre, zany, or weird. 

wack

noun
  • An eccentric; an oddball; a weirdo. 

  • A friendly term of address. 

adj
  • Annoyingly or disappointingly bad, in various senses; lousy, cringy, uncool, messed up. 

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