cheerio vs cheero

cheerio

intj
  • Hello; a greeting. 

  • Goodbye, an interjection said upon parting. 

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

cheero

intj
  • A friendly greeting 

  • Synonym of cheerio 

  • Synonym of cheers 

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