ginge vs gingernut

ginge

noun
  • A red-haired person. 

adj
  • ginger, red-haired 

gingernut

noun
  • A redhead; a ginger-haired person. 

  • A hard biscuit, flavoured with powdered ginger, often dunked in tea. 

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