cackle vs sniggle

cackle

verb
  • To talk in a silly manner; to prattle. 

  • To laugh with a broken sound similar to a hen's cry. 

  • To pretend to rattle (dice) in one's hand while gripping them so that they maintain their orientation. 

  • To make a sharp, broken noise or cry, as a hen or goose does. 

noun
  • The cry of a hen or goose, especially when laying an egg. 

  • Futile or excessively noisy talk. 

  • A group of hyenas. 

  • A laugh resembling the cry of a hen or goose. 

sniggle

verb
  • To chortle or chuckle; snicker. 

  • To ensnare. 

  • To fish for eels by thrusting a baited hook into their dens. 

  • To catch by this means. 

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