cheerio vs prosit

cheerio

intj
  • Hello; a greeting. 

  • Goodbye, an interjection said upon parting. 

noun
  • A small saveloy often consumed with tomato sauce at parties. 

prosit

intj
  • Toast to indicate one is drinking to someone's, or to each other's, health. 

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