Metropolis vs Root

Metropolis

name
  • A ghost town in Elko County, Nevada, United States. 

  • A city, the county seat of Massac County, Illinois, United States. 

  • a classical city site in Anatolia (Turkey). 

Root

name
  • A town in Lucerne canton, Switzerland. 

  • A river in Wisconsin, United States. 

  • A river in Minnesota, United States; named as a translation of its native Dakota name. 

  • A town in New York, United States; named for lawyer and politician Erastus Root. 

  • A habitational surname from Dutch for someone living near a retting place (Dutch root, from roten (“to ret”)). 

  • An English surname from Middle English from a byname from Middle English rote (“glad”). 

  • An English surname originating as an occupation for a rote (medieval guitar)-player. 

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