decrepitate vs implode

decrepitate

verb
  • Of salts and minerals, to crackle when heated, indicating a sudden breakdown of their particles. 

  • To roast (a salt or mineral) until it stops crackling in the fire. 

implode

verb
  • To cause to collapse or burst inward violently. 

  • To collapse or burst inward violently. 

  • To compress (data) with a particular algorithm. 

  • The opposite of explode, array to string conversion. 

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