decimate vs downbear

decimate

verb
  • To reduce to one-tenth: to destroy or remove nine-tenths of anything. 

  • To replace a high-resolution model with another of lower but acceptable quality. 

  • To devastate: to reduce or destroy significantly but not completely. 

  • To destroy or remove one-tenth of anything. 

downbear

verb
  • To lessen; reduce. 

  • To bear or press down (on); press upon; depress; subdue. 

  • To bear, bring or carry down. 

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