decimate vs shoot down

decimate

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

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

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

  • To destroy or remove one-tenth of anything. 

shoot down

verb
  • To cause to fall by shooting. 

  • To criticize a (request) to the point of preclusion. 

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