benevolence vs lack of reservation

benevolence

noun
  • Charitable kindness. 

  • A kind of forced loan or contribution levied by kings without legal authority, first so called under Edward IV in 1473. 

  • An altruistic gift or act. 

  • Disposition to do good. 

lack of reservation

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