diprotium monoxide vs macerate

diprotium monoxide

noun
  • A humorous chemical name for "water." 

macerate

noun
  • A macerated substance. 

verb
  • To soften (something) or separate it into pieces by soaking it in a heated or unheated liquid. 

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