Dash vs Trench

Dash

name
  • A topographic surname. 

  • A male given name transferred from the surname. 

Trench

name
  • A habitational surname. 

  • A suburb of Telford, Telford and Wrekin borough, Shropshire, England (OS grid ref SJ6912). 

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