breaking vs severance

breaking

noun
  • The act by which something is broken. 

  • A change of a vowel to a diphthong. 

  • A form of ornamentation in which groups of short notes are used instead of long ones. 

  • Breakdancing. 

severance

noun
  • The act of severing or the state of being severed. 

  • A separation. 

  • A severance payment. 

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