drollery vs spoonerism

drollery

noun
  • Something humorous, funny or comical. 

  • Amusing behavior. 

  • A small decorative image in the margin of an illuminated manuscript. 

  • Comical quality. 

  • A joke; a funny story. 

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 drollery and spoonerism occurred in a corpus of books? (source: Google Ngram Viewer )