dampproof vs dunkable

dampproof

adj

  • Resistant to the effects of damp. 

verb

  • To make resistant to the effects of damp. 

dunkable

adj

  • Waterproof. 

  • Suitable for dunking (as of food). 

noun

  • Any food item suitable for dunking. 

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