hrm vs yo

hrm

intj
  • Expresses a moment of particular curiosity or thoughtfulness. 

yo

intj
  • An expression of surprise or excitement. 

  • An interjection similar to hey. 

  • A greeting similar to hi. 

  • Present! Here! 

  • Emphatic conclusion to a statement. 

pron
  • third-person singular, familiar 

noun
  • The letter Ё, ё. 

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