off the top of head vs violent

off the top of head

violent

adj
  • Produced or effected by force; not spontaneous; unnatural. 

  • Involving extreme force or motion. 

  • Involving physical conflict. 

  • Likely to use physical force. 

  • Intensely vivid. 

How often have the words off the top of head and violent occurred in a corpus of books? (source: Google Ngram Viewer )