asbestos vs waterproof

asbestos

noun
  • Any of several fibrous mineral forms of magnesium silicate, used for fireproofing, electrical insulation, building materials, brake linings, chemical filters, suits, fireman's gloves, etc. 

  • Any of asbestos-like forms of several minerals, asbestiforms 

verb
  • To insulate or buffer. 

  • To coat or line with asbestos. 

  • To expose to asbestos; to cause to suffer asbestosis. 

waterproof

verb
  • To make waterproof or water-resistant. 

noun
  • A substance or preparation for rendering cloth, leather, etc., impervious to water. 

  • Cloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; especially, an outer garment made of such material. 

adj
  • Incapable of failing; unassailable. 

  • Resistant to the effects of water. 

  • Made of or covered with material that doesn't allow water in. 

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