risible vs witful

risible

adj
  • Of or pertaining to laughter 

  • Easily laughing; prone to laughter 

  • Provoking laughter; ludicrous; ridiculous; humorously insignificant 

witful

adj
  • Full of or possessing wit; wise; sensible 

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