forget vs ixnay

forget

verb
  • To unintentionally not do, neglect. 

  • To lose remembrance of. 

  • To unintentionally leave something behind. 

  • To cease remembering. 

  • Euphemism for fuck, screw (a mild oath). 

ixnay

verb
  • To reject something. 

noun
  • Nothing; nix; often in the phrase "ixnay on ...", indicating something that must not be mentioned, often in Pig Latin 

intj
  • No. 

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