forbid vs say no

forbid

verb
  • To oppose, hinder, or prevent, as if by an effectual command. 

  • To deny, exclude from, or warn off, by express command. 

  • To disallow; to proscribe. 

say no

verb
  • To reject something. 

  • To disagree; to think something or someone is doing or saying what is wrong. 

How often have the words forbid and say no occurred in a corpus of books? (source: Google Ngram Viewer )