Inevitable vs Iron

Inevitable

name

  • The fifty-sixth sura (chapter) of the Qur'an. 

Iron

name

  • The 57th sura (chapter) of the Qur'an. 

  • A group of Ossetians of the northern Caucasus who speak the Iron Ossetian dialect. 

adj

  • Of or pertaining to the Iron people. 

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