archaeology vs perforation

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 

perforation

noun
  • A series of holes punched through something in order to assist in separating parts. 

  • That portion of a surface that remains after an open disk is removed from it. 

  • An abnormal opening in an organ, such as a rupture. 

  • Any opening in a solid object. 

  • The act of perforating or the state of being perforated. 

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