moral vs principled

moral

adj
  • Conforming to a standard of right behaviour; sanctioned by or operative on one's conscience or ethical judgment. 

  • Probable but not proved. 

  • Of or relating to principles of right and wrong in behaviour, especially for teaching right behaviour. 

  • Capable of right and wrong action. 

  • Positively affecting the mind, confidence, or will. 

verb
  • To moralize. 

noun
  • Moral practices or teachings: modes of conduct. 

  • The ethical significance or practical lesson. 

principled

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

  • Based on, having, or manifesting principles 

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