accredit vs prevent

accredit

verb
  • To put or bring into credit; to invest with credit or authority; to sanction. 

  • To certify as meeting a predetermined standard; to certify an educational institution as upholding the specified standards necessary for the students to advance. 

  • To enter on the credit side of an account book. 

  • To send with letters credential, as an ambassador, envoy, or diplomatic agent; to authorize, as a messenger or delegate. 

  • To credit. 

  • To ascribe; attribute; credit with. 

  • To believe; to put trust in. 

  • To recognize as outstanding. 

prevent

verb
  • To stop (an outcome); to keep from (doing something). 

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