cheerio vs down the hatch

cheerio

intj
  • Goodbye, an interjection said upon parting. 

  • Hello; a greeting. 

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

down the hatch

prep
  • Into the mouth and down the throat, especially with regard to the consumption of a beverage. 

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