Bold vs Swallow

Bold

name
  • A civil parish in the Metropolitan Borough of St Helens, Merseyside, England. 

  • A surname. 

Swallow

name
  • A village and civil parish in West Lindsey district, Lincolnshire, England (OS grid ref TA1703). 

  • A surname. 

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