indigestible vs not much cop

indigestible

adj

  • Difficult to accept; unpalatable. 

  • Difficult or impossible to digest. 

noun

  • Anything that is difficult to digest. 

not much cop

adj

  • Not very good; unimpressive. 

How often have the words indigestible and not much cop occurred in a corpus of books? (source: Google Ngram Viewer )