cheero vs skoal

cheero

intj
  • Synonym of cheers 

  • A friendly greeting 

  • Synonym of cheerio 

skoal

intj
  • A toast when drinking, roughly equivalent to cheers. 

verb
  • To make such a toast. 

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