rupture vs unification

rupture

noun
  • A social breach or break, between individuals or groups. 

  • A failure mode in which a tough ductile material pulls apart rather than cracking. 

  • A burst, split, or break. 

  • A break or tear in soft tissue, such as a muscle. 

verb
  • To burst, break through, or split, as under pressure. 

  • To dehisce irregularly. 

unification

noun
  • Given two terms, their join with respect to a specialisation order. 

  • The act of unifying. 

  • The state of being unified. 

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