Main vs Soar

Main

name
  • A river in Northern Ireland, flowing into Lough Neagh. 

  • A river in southern Germany, flowing from Bavaria to the Rhine. 

  • A surname. 

Soar

name
  • A river in Leicestershire, England, a tributary to the Trent. 

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