explosion vs inburst

explosion

noun
  • A sudden outburst. 

  • A sudden uncontrolled increase. 

  • A violent release of energy (sometimes mechanical, nuclear, or chemical.) 

  • A bursting due to pressure. 

  • The sound of an explosion. 

inburst

noun
  • A bursting in or into. 

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