Berg vs Piedmont

Berg

name
  • A municipality of Troms, Norway. 

  • A former duchy and later grand duchy in Westphalia (Western Germany). 

  • A surname from German common in the US, associated with German or Scandinavian ancestry. 

Piedmont

name
  • A region in the north of Italy. 

  • The region of the eastern US between the Appalachian mountains and the coastal plain, extending from eastern Alabama to northern New Jersey. 

  • A city in Alameda County, California, United States. 

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