retrogradation vs shipwreck

retrogradation

noun
  • Decline, degradation. 

  • A reaction that takes place in gelatinized starch when the amylose and amylopectin chains realign themselves, largely responsible for bread becoming stale. 

  • Motion in a retrograde manner. 

shipwreck

noun
  • destruction; ruin; irretrievable loss 

  • An event where a ship sinks or runs aground. 

  • A ship that has sunk or run aground so that it is no longer seaworthy. 

verb
  • To wreck a boat through a collision or mishap. 

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