dunkable vs waterproofed

dunkable

adj
  • Waterproof. 

  • Suitable for dunking (as of food). 

noun
  • Any food item suitable for dunking. 

waterproofed

adj
  • Having been made waterproof 

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