baby doll vs sweetie pie

baby doll

noun
  • A young attractive woman; sweetheart, darling. 

  • A style of women's nightdress. 

  • A child's doll designed to look like a baby. 

sweetie pie

noun
  • A sweetheart; a beloved person. 

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