decayed vs spoilt

decayed

adj
  • Having undergone decay, rotted. 

spoilt

adj
  • Of food, that has deteriorated to the point of no longer being usable or edible. 

  • Having a selfish or greedy character, especially due to pampering 

  • Having lost its original value 

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