humdinger vs risible

humdinger

noun
  • Something that is particularly outstanding, unusual, or exceptional. 

risible

adj
  • Easily laughing; prone to laughter 

  • Provoking laughter; ludicrous; ridiculous; humorously insignificant 

  • Of or pertaining to laughter 

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