babe vs baby of the family

babe

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

  • Darling (term of endearment). 

  • An attractive person, especially a young woman. 

baby of the family

noun
  • The youngest member of an immediate family. 

  • A member of an immediate family who behaves as, or is treated as though they were the youngest member of a family. 

  • An adult member of an immediate family who is treated by others in the family, especially the parents, as though they were a child. 

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