repulsion vs sweetening

repulsion

noun
  • An extreme dislike of something, or hostility to something. 

  • The repulsive force acting between bodies of the same electric charge or magnetic polarity. 

  • The act of repelling or the condition of being repelled. 

sweetening

noun
  • A sweetener. 

  • The process of making something sweeter. 

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