u vs yo

u

noun
  • A thing in the shape of the letter U 

  • The name of the Latin-script letter U/u. 

character
  • The twenty-first letter of the English alphabet, called u and written in the Latin script. 

pron
  • you (in text messaging and internet conversations) 

yo

noun
  • The letter Ё, ё. 

pron
  • third-person singular, familiar 

intj
  • An expression of surprise or excitement. 

  • An interjection similar to hey. 

  • A greeting similar to hi. 

  • Present! Here! 

  • Emphatic conclusion to a statement. 

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