Idle vs Main

Idle

name
  • A river, the River Idle in Nottinghamshire, England, which flows into the River Trent. 

  • A suburb in the City of Bradford, West Yorkshire, England (OS grid ref SE1737). 

  • A surname. 

Main

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

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

  • A surname. 

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