caitiff vs principled

caitiff

adj
  • Especially despicable; cowardly 

noun
  • A base or despicable person; a wretch 

principled

adj
  • Based on, having, or manifesting principles 

  • strongly adhering to, or heedful of, guiding beliefs or moral rules 

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