belibel vs diss

belibel

verb
  • To libel or traduce; to calumniate. 

diss

verb
  • To put (someone) down, or show disrespect by the use of insulting language or dismissive behaviour. 

noun
  • Dissertation. 

  • An insult or put-down; an expression of disrespect. 

  • Ampelodesmos mauritanicus syn. Ampelodesmos tenax, a reedy grass used for cordage. 

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