sweetie vs sweetie pie

sweetie

noun
  • A sweetheart. 

  • A person who is much loved. 

  • A fruit that is a crossbreed between a grapefruit and a pomelo, originating in Israel. 

  • A sweet; a candy. 

sweetie pie

noun
  • A sweetheart; a beloved person. 

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