bonbon vs cachou

bonbon

noun
  • A small, spherical savory snack or canapé. 

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

  • A Christmas cracker. 

cachou

noun
  • A sweet eaten to sweeten the breath. 

  • A small metallic ball used as edible decoration on cakes etc. 

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