decimate vs wrack

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. 

wrack

verb
  • To execute vengeance; avenge. 

  • To wreck, especially a ship. 

  • To worry; tease; torment. 

noun
  • Any marine vegetation cast up on shore, especially seaweed of the family Fucaceae. 

  • The remains; a wreck. 

  • A high flying cloud; a rack. 

  • Weeds, vegetation or rubbish floating on a river or pond. 

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