ribbing vs spoonerism

ribbing

noun
  • The action of the verb to rib; teasing. 

  • A rib, or the collective ribs, on an object. 

  • An instance of teasing. 

spoonerism

noun
  • A play on words on a phrase in which the initial (usually consonantal) sounds of two or more of the main words are transposed. 

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