Duff vs Gross

Duff

name
  • An unincorporated community in Indiana, United States 

  • An unincorporated community in Tennessee, United States 

  • A male given name 

  • A village in Saskatchewan, Canada 

  • A surname. 

Gross

name
  • A village in Nebraska, having a population of two as of 2010. 

  • A surname from Middle English, originally a nickname for a big man, from Middle English gros (“large”). 

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