indigestible vs rotten

indigestible

adj
  • Difficult to accept; unpalatable. 

  • Difficult or impossible to digest. 

noun
  • Anything that is difficult to digest. 

rotten

adj
  • Cruel, mean or immoral. 

  • Bad or terrible. 

  • Of stone or rock, crumbling or friable; in a loose or disintegrated state. 

  • very drunk, intoxicated 

  • Of perishable items, overridden with bacteria and other infectious agents. 

  • In a state of decay. 

adv
  • To an extreme degree. 

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