cachinnate vs snicker

cachinnate

verb
  • To laugh loudly, immoderately, or too often. 

snicker

verb
  • To emit a snicker, a stifled or broken laugh. 

  • To whinny. 

  • To utter through a laugh of this kind. 

noun
  • A stifled or broken laugh. 

  • A player who snicks the ball. 

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