cachou vs pastille

cachou

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

  • A sweet eaten to sweeten the breath. 

pastille

noun
  • An often round and somewhat flat flavoured candy or sweet. 

  • Any small, usually round and somewhat flat, granular piece of material; a tablet. 

  • A medicinal pill, originally made of compressed herbs. 

  • A candy- or sweet-like lozenge, which, when sucked, releases substances that soothe a sore throat, and sometimes vapours to help unblock the nose or sinuses. 

  • A small pellet containing aromatic substances, burned to diffuse a fragrance or to disinfect or fumigate. 

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