misstep vs stillbirth

misstep

noun
  • A step that is wrong, a false step. 

  • An error or mistake. 

verb
  • To step badly or incorrectly. 

  • To make an error or mistake. 

stillbirth

noun
  • The birth of a dead fetus; the delivery of an infant which is dead at birth. 

  • The birth of a dead fetus after 20 weeks of gestation. 

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