fibrillate vs hurtle

fibrillate

verb
  • To make rapid irregular movements. 

hurtle

verb
  • To move rapidly, violently, or without control. 

  • To hurl or fling; to throw hard or violently. 

noun
  • A clattering sound. 

  • A fast movement in literal or figurative sense. 

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