antagonism vs pact

antagonism

noun
  • A strong natural dislike or hatred; antipathy. 

pact

noun
  • An agreement; a compact; a covenant. 

  • An alliance or coalition. 

  • An agreement between two or more nations 

verb
  • To form a pact; to agree formally. 

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