caitiff vs weakling

caitiff

noun
  • A base or despicable person; a wretch 

adj
  • Especially despicable; cowardly 

weakling

noun
  • A person of weak or even sickly physical constitution 

  • A person of weak character, lacking in courage and/or moral strength. 

adj
  • weak, either physically, morally or mentally 

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