bonbon vs lollipop

bonbon

noun
  • A sweet, especially a small chocolate-covered candy. 

  • A small, spherical savory snack or canapé. 

  • A Christmas cracker. 

lollipop

noun
  • An item of confectionery consisting of a piece of candy/sweet attached to a stick. 

  • Something having the shape of a lollipop: a linear stem connected to a round body. 

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