frangible vs wreckable

frangible

adj
  • Able to be broken; breakable, fragile. 

noun
  • Something that is breakable or fragile; especially something that is intentionally made so, such as a bullet. 

wreckable

adj
  • Capable of being wrecked. 

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