Blithe vs Swale

Blithe

name
  • A river in Staffordshire, England, which joins the River Trent. 

Swale

name
  • A river, a tributary of the Ure in North Yorkshire, England. 

  • A local government district with borough status in Kent, England, created in 1974 with its headquarters in Sittingbourne and named after the channel 

  • The Swale, a channel between the Isle of Sheppey and the Kentish mainland 

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