assiduity vs dedication

assiduity

noun
  • Great and persistent toil or effort. 

  • Constant personal attention, solicitous care. 

dedication

noun
  • The act of dedicating or the state of being dedicated. 

  • The deliberate or negligent surrender of all rights to property. 

  • A note addressed to a patron or friend, prefixed to a work of art as a token of respect, esteem, or affection. 

  • A ceremony marking an official completion or opening. 

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