ethic vs mores

ethic

noun
  • The morality of an action. 

  • A set of principles of right and wrong behaviour guiding, or representative of, a specific culture, society, group, or individual. 

adj
  • Moral, relating to morals. 

mores

noun
  • A set of moral norms or customs derived from generally accepted practices rather than written laws. 

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