failed vs stillborn

failed

adj
  • unsuccessful 

  • Decayed; worn out. 

  • Bankrupt. 

stillborn

adj
  • Ignored, without influence, or unsuccessful from the outset; abortive. 

  • Dead at birth. 

noun
  • A baby that is born dead. 

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