approve vs negate

approve

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

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

negate

verb
  • To perform the NOT operation on. 

  • To be negative; bring or cause negative results. 

  • To deny the existence, evidence, or truth of; to contradict. 

  • To nullify or cause to be ineffective. 

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