compel vs overburden

compel

verb
  • To overpower; to subdue. 

  • To force, constrain or coerce. 

  • To exact, extort, (make) produce by force. 

overburden

verb
  • To overload or overtax. 

noun
  • A sterile stratum that lies above the stratum being investigated 

  • The rock and subsoil that lies above a mineral deposit such as a coal seam. 

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