approval vs repulse

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. 

repulse

noun
  • refusal, rejection or repulsion 

  • the act of repulsing or the state of being repulsed 

verb
  • To repel or drive back. 

  • To reject or rebuff. 

  • To cause revulsion in. 

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