skoal vs skol

skoal

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

verb
  • To make such a toast. 

skol

intj
  • A drinking-toast; cheers. 

verb
  • To down (a drink). 

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