inviolable vs wetproof

inviolable

adj
  • Not violable; not to be infringed. 

  • Incapable of being injured or invaded; indestructible. 

  • Not susceptible to violence, or of being profaned, corrupted, or dishonoured. 

wetproof

adj
  • Waterproof. 

verb
  • To make waterproof. 

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