archaeology vs burrow

archaeology

noun
  • 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. 

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

burrow

noun
  • A tunnel or hole, often as dug by a small creature. 

  • A heap or heaps of rubbish or refuse. 

verb
  • (with adverbial of direction) to move underneath or press up against in search of safety or comfort 

  • (with into) to investigate thoroughly 

  • to dig a tunnel or hole 

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