lovebug vs sweets

lovebug

noun
  • A person who is in love; a sweetheart. 

  • An insect, the honeymoon fly (Plecia nearctica, family Biblionidae). 

sweets

noun
  • A term of endearment; sweetheart. 

  • drugs, amphetamine 

  • Confectionery, candy. 

  • flowers, sweet-scented. 

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