Sharpness vs Staple

Sharpness

name
  • An inland port in Stroud district, Gloucestershire, England (OS grid ref SO6702). 

Staple

name
  • A village and civil parish in Dover district, Kent, England (OS grid ref TR2756). 

  • A habitational surname from Middle English. 

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