acclaim vs approval

acclaim

noun
  • An acclamation; a shout of applause. 

verb
  • To express great approval (for). 

  • To elect (a politician, etc.) to an office automatically because no other candidates run; elect by acclamation. 

  • To declare by acclamations. 

  • To salute or praise with great approval; to compliment; to applaud; to welcome enthusiastically. 

approval

noun
  • An expression of favorable acceptance and encouragement; a compliment that also condones. 

  • Something mailed by a seller to a collector to match their stated interests; the collector can approve of or return the item. 

  • An expression granting permission; an indication of agreement with a proposal; an acknowledgement that a person, thing, or event meets requirements. 

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