inviolable vs unwreckable

inviolable

adj
  • Incapable of being injured or invaded; indestructible. 

  • Not violable; not to be infringed. 

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

unwreckable

adj
  • Incapable of being wrecked. 

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