berserk vs hatstand

berserk

adj
  • Bizarre; weird. 

  • Furiously, injuriously, or maniacally violent or out of control. 

  • Wildly joyous; ecstatic. 

noun
  • Synonym of berserker (“a Norse warrior who fought in a frenzy”) 

hatstand

adj
  • Crazy, insane. 

noun
  • A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats. 

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