daven vs lullaby

daven

verb
  • to recite the Jewish liturgy; to pray 

lullaby

verb
  • To sing a lullaby to. 

noun
  • A cradlesong, a soothing song to calm children or lull them to sleep. 

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