archaeology vs treasure trove

archaeology

noun
  • The study of the past by excavation and analysis of its material remains 

  • the actual excavation, examination, analysis and interpretation. 

  • the actual remains together with their location in the stratigraphy. 

  • the academic subject; in the USA: one of the four sub-disciplines of anthropology. 

treasure trove

noun
  • A hidden treasure, subsequently discovered. 

  • A valuable discovery. 

  • Precious metal objects that were buried or concealed by an unknown owner. 

  • A place where many things of value can be found. 

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