Duff vs Link

Duff

name
  • A male given name 

  • An unincorporated community in Tennessee, United States 

  • An unincorporated community in Indiana, United States 

  • A village in Saskatchewan, Canada 

  • A surname. 

Link

name
  • A diminutive of the male given name Lincoln 

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