conscientious vs ethical

conscientious

adj
  • Influenced by conscience; governed by a strict regard to the dictates of conscience, or by the known or supposed rules of right and wrong (said of a person). 

  • Thorough, careful, or vigilant in one’s task performance. 

ethical

adj
  • Of or relating to the study of ethics. 

  • Morally approvable; good. 

  • Of or relating to the accepted principles of right and wrong, especially those of some organization or profession. 

  • Only dispensed on the prescription of a physician. 

noun
  • An ethical drug, one only dispensed on the prescription of a physician. 

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