constraining vs violent

constraining

noun
  • The act by which something is constrained. 

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 constraining and violent occurred in a corpus of books? (source: Google Ngram Viewer )