dear heart vs sweets

dear heart

noun
  • Term of affection; sweetheart. 

sweets

noun
  • A term of endearment; sweetheart. 

  • drugs, amphetamine 

  • Confectionery, candy. 

  • flowers, sweet-scented. 

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