giggle vs hee-haw

giggle

verb
  • To laugh gently in a playful, nervous, or affected manner. 

noun
  • Fun; an amusing episode. 

  • A high-pitched, silly laugh. 

hee-haw

verb
  • To utter the cry of an ass or donkey. 

intj
  • The cry of an ass or donkey. 

noun
  • The cry of an ass or donkey. 

  • Nothing. 

How often have the words giggle and hee-haw occurred in a corpus of books? (source: Google Ngram Viewer )