approve vs contradict

approve

verb
  • To consider worthy (to); to be pleased (with); to accept. 

  • To officially sanction; to ratify; to confirm; to set as satisfactory. 

  • To make profit of; to convert to one's own profit — said especially of waste or common land appropriated by the lord of the manor. 

  • To regard as good; to commend; to be pleased with; to think well of. 

contradict

verb
  • To be contrary to (something). 

  • To deny the truth or validity of (a statement or statements). 

  • To oppose (a person) by denying the truth or pertinence of a given statement. 

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