babe vs preemie

babe

noun
  • A baby or infant; a very young human or animal. 

  • Darling (term of endearment). 

  • An attractive person, especially a young woman. 

preemie

noun
  • A baby that has been born prematurely 

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