berserk vs birdy

berserk

adj
  • Wildly joyous; ecstatic. 

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

  • Bizarre; weird. 

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

birdy

adj
  • Excited due to having encountered a bird or its scent. 

  • Resembling or characteristic of a bird. 

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