acceptable vs immoral

acceptable

adj
  • worthy, decent, sure of being accepted or received with at least moderate pleasure 

  • Barely worthy, less than excellent; passable. 

immoral

adj
  • Breaching principles of natural law, rectitude, or justice, and so inconsistent with the demands of virtue, purity, or "good morals"; not right, not moral. (Compare unethical, illegal.) 

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