capitulation vs giving in

capitulation

noun
  • The act of capitulating or surrendering to an enemy upon stipulated terms; the act of ceasing to resist an opponent or an unwelcome demand. 

  • The instrument containing the terms of an agreement or surrender. 

  • A reducing to heads or articles; a formal agreement. 

  • An enumeration of the main parts of a subject. 

giving in

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