principled vs sinful

principled

adj
  • Based on, having, or manifesting principles 

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

sinful

adj
  • Constituting a sin; morally or religiously wrong; wicked; evil 

  • Having sinned; guilty of sin. 

  • decadent (luxuriously self-indulgent) 

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