inviolable vs unignorable

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. 

unignorable

adj
  • That cannot be ignored. 

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